List of the Paleozoic life of Ohio

• †Abylea – type locality for genus • †Abylea minuta – type locality for species • †Acacocrinus • †Acacocrinus anebos • †Acanthatia • †Acanthoclema • †Acanthoclema lineatum • †Acanthoclema ohioensis • †Acanthoclema sulcatum • †Acanthonema • †Acanthonema holopiforme • †Acanthonema newberryi • †Acanthopecten • †Acanthopecten bellosum – type locality for species • †Acanthopecten carboniferus • †Acanthotriletes • †Acanthotriletes aculeolatus • †Achatella • †Acidaspis • †Acidaspis cincinnatiensis • †Acleistoceras – tentative report • †Acmaeoblatta – type locality for genus • †Acmaeoblatta lanceolata – type locality for species • †Acriora • †Acriora petala • †Acteonina • †Acteonina hanseni – type locality for species • †Actinodesma • †Actinodesma erectum • †Actinopteria • †Actinopteria boydi • †Acutichiton – type locality for genus • †Acutichiton pyrmidalus – type locality for species • †Adamanterpeton – type locality for genus • †Adamanterpeton ohioensis – type locality for species • †Aechmina • †Aechmina richmondensis • †Aethaspis • †Agelacrinites • †Agelacrinites southworthi – or unidentified comparable form • †Agnesia • †Agnesia prosseri • †Alaionema • †Alaionema crenulatum • †Alaskozygopleura • †Alaskozygopleura gracillium • †Alatisporites • †Alatisporites trialatus • †Alethopteris'' • †Allocryptaspis • †Alloiopteris • †Alloiopteris erosa • †Allonema • †Allonychia • †Allorisma • †Allorisma costatum • †Alveolites • †Alveolites labechii • †Ambedus – type locality for genus • †Ambedus pusilus – type locality for species • †Ambocoelia • †Ambocoelia norwoodi • †Ambocoelia umbonata • †Ambonychia • †Ambonychia alata • †Ambonychia cultrata • †Ambonychia richmondensis • †Ambonychia suberecta • †Ambozone • †Ambozone peoriensis – or unidentified comparable form • †Ametroblatta • †Ametroblatta strigosa – type locality for species • †Ameura • †Ameura missouriensis • †Ammonidium • †Ammonidium hamatum • †Amphilichas • †Amphiscapha • †Amphiscapha catilloides • †Amphiscapha reedsi • †Amplexopora'' • †Amplexopora pustulosa • †Amplexopora robusta • †Anaptychus – tentative report • †Anaptychus emersoni • †Anartiocystis • †Anartiocystis foerstei • †Anaspyroceras • †Ancienta • †Ancienta ohioensis • †Annularia'' • †Annularia asteris • †Annularia radiata • †Annularia sphenophylloides • †Annularia stellata • †Anomalocrinus • †Anomalodonta • †Anomalodonta costata • †Anomalotoechus • †Anomalotoechus tuberatus • †Anostylostroma • †Anostylostroma columnare • †Anostylostroma laxum • †Anozyga – type locality for genus • †Anozyga bulla – type locality for species • †Anthracodromeus • †Anthracodromeus longipes – type locality for species • †Anthracopupa – type locality for genus • †Anthracopupa ohioensis – type locality for species • †Anthracosaurus'' • †Anthracosaurus lancifer – type locality for species • †Antiquaster • †Antiquaster magrumi • †Antiquatonia • †Antiquatonia costata • †Antiquatonia portlockianus • †Aparchites • †Aparchites minutissimus • †Aparchites oblongus • †Aphelakardia • †Aphelakardia alternistriata • †Aphlebia • †Apiculatasporites • †Apiculatasporites acueatus • †Apiculatasporites latigranifer • †Apiculatasporites saetiger • †Apiculatasporites setulosus • †Arabellites • †Archaeothyris'' • †Archegogryllus – type locality for genus • †Archegogryllus priscus – type locality for species • †Archinacella • †Archinacella rugatina • †Arcochiton – type locality for genus • †Arcochiton raymondi – type locality for species • †Arctinurus'' • †Arjamannia • †Arjamannia inexpectans • †Armenoceras • †Arthraria • †Arthraria biclavata • †Arthroacantha • †Arthroacantha carpenteri • †Arthropitys • Arthropoma • †Arthropoma shafferi • †Arthrostylus • †Artisia • †Ascodictyon • †Ascodictyon fusiforme • †Asolanus • †Asolanus camptotaenia • †Asolanus sigillarioides • †Aspidopora • †Aspidopora newberryi • †Astartella • †Astartella clinata – type locality for species • †Astartella concentrica • †Astartella varica • †Astartella vera • †Asterotheca • †Atactoblatta – type locality for genus • †Atactoblatta anomala – type locality for species • †Atactoechus • †Atactoechus typicus – or unidentified comparable form • †Atactopora • †Atactoporella • †Ateleocystites • †Athyris • †Athyris vittata • †Atraktoprion • †Atrypa • †Atrypa reticularis'' • †Atrypa reticularus – report made of unidentified related form or using admittedly obsolete nomenclature • †Augustoceras • †Aulacella • †Aulacera • †Aulacera nodulosa • †Aulocystis • †Aulocystis auloporoidea • †Aulocystis auloporoides • †Aulocystis flabellata • †Aulocystis jacksoni • †Aulocystis lucasensis • †Aulopora • †Aulopora microbuccinata • †Aulopora serpens • †Austinella • †Austinella scovellei • †Aviculopecten'' • †Aviculopecten appalachianus – type locality for species • †Aviculopecten columbianus – type locality for species • †Aviculopecten coxanus • †Aviculopecten fasciculatus • †Aviculopecten occidentalis • †Aviculopecten princeps • †Aviculopecten winchelli • †Aviculopinna • †Aviculopinna peracuta ==B==

• †Bactrites – tentative report • †Bactrites arkonensis – or unidentified comparable form • Bairdia • †Bairdia devonica • †Balbiniconcha • †Balbiniconcha hebe • †Baldwinonus • †Baldwinonus dunkardensis • †Barathrisphaeridium • †Barathrisphaeridium chagrinense • †Barathrisphaeridium pumilispinosum • †Barbclabornia • †Barbclabornia luedersensis • †Barychilina • †Batostoma • †Batostoma varians • †Batostomella • †Batostomella gracilis • †Batostomella striata • †Baylea • †Baylea giffordi – or unidentified comparable form • †Baylea inclinata – type locality for species • †Beatricea • †Beatricea undulata • †Bellerophon'' • †Bellerophon hyalina • †Bellerophon jeffersonensis • †Bellerophon newberryi • †Bellerophon pelops • †Bellerophon spergensis • †Bellerophon stevensianus • †Bellerophon stummi – type locality for species • †Bellerophon whittleseyi – type locality for species • †Belodella • †Beloitoceras • †Beloitoceras amoenum • †Bembexia • †Bembexia adjutor – type locality for species • †Bembexia insolita • Berenicea • †Bethanyphyllum • †Bethanyphyllum robustum • †Bicarina • †Bicarina petilitornata • †Bickmorites • †Bikocrinus • †Bikocrinus baios • †Billingsastraea • †Billingsastraea longicarinata • †Billingsastrea • †Billingsastrea longicarinata • †Blattinopsis • †Blattinopsis americana – type locality for species • †Blattinopsis anthracina – type locality for species • †Blattinopsis latipennis – type locality for species • †Bodmania • †Bollia • †Bollia persulcata • †Bollia regularis • †Botryllopora • †Botryllopora socialis • †Botryocrinus • †Botryocrinus neimani • †Bowmanites • †Bowmanites incurvata • †Bowmanites magna • †Brachiospongia • †Brachydectes'' – type locality for genus • †Brachydectes newberryi – type locality for species • †Brockocystis • †Brockocystis nodosaria • †Broiliellus • †Broiliellus hektotopos – type locality for species • †Bucanella • †Bucania • †Bucania crassa • †Bucanopsis • †Buthotrephis • †Buthotrephis gracilis • †Byssonychia • †Byssonychia grandis • †Byssonychia radiata • Bythocypris • †Bythocypris cylindrica • †Bythocypris punctatus • †Bythopora • †Bythopora delicatula • †Bythopora striata ==C==

• †Calamites'' • †Calamites carinatus • †Calamites cisti • †Calamites citiifromis • †Calamites sachsi • †Calamites schützeiformis • †Calamites suckowi • †Calamites suckowii • †Calamites undulatus • †Calamospora • †Calamospora breviradiata • †Calamospora hartungiana • †Calamospora straminea • †Calamostachys • †Calamostachys bisporangiata – type locality for species • †Calamostachys germanica • †Calamostachys interculata – type locality for species • †Calamostachys longibracteata – type locality for species • †Calamostachys minuta – type locality for species • †Calamostachys recurvata – type locality for species • †Calamostachys tuberculata • †Calapoecia • †Calceocrinus • †Calceocrinus incertus • †Callipleura • †Callipleura nobilis – or unidentified comparable form • †Callixylon'' • †Callixylon clevelandensis • †Callixylon newberryi • †Calloporella • †Calostylis – tentative report • †Calostylis lindstroemi • †Calvibembexia • †Calvibembexia sulcomarginata • †Camarotoechia • †Camarotoechia semiplicata • feeding on an Aphetoceras, while a quartet of Cyclostomiceras swim by †Cameroceras'' • †Cardiocarpon • †Cardiomorpha • †Cardiomorpha missouriensis • †Carneyella • †Carneyella foerstei • †Caryocrinites • †Catazone • †Catazone eversolensis – type locality for species • †Catazyga • †Catazyga headi • †Catenipora'' • †Catenipora favositomima • †Catenipora favositomina • †Catenipora gotlandica • †Caulopteris • †Caulopteris antiqua • †Caulopteris peregrina • †Cayugaea • †Cayugaea intermittens • †Cayugaea transitorius – tentative report • †Centroceras • †Centrorhynchus (= Sartenaerus) • †Ceramoporella • †Ceramoporella granulosa • †Ceramoporella ohioensis • †Ceratocephala • †Ceratoikiscum • †Ceratoikiscum bujugum • †Ceratoikiscum spinosiarcuatum • †Ceratoikiscump • †Ceratoikiscump erittacanthinum • †Ceratoikiscump lanistellare • †Ceratopsis • †Ceratopsis chambersi • †Ceratopsis oculifera • †Ceraurinus • †Ceraurinus icarus • †Ceraurus • †Chaenomya • †Chaenomya leavenworthensis • †Chagrinia • †Chagrinichnites • †Charactoceras • †Chasmatopora • †Chasmops'' • †Chaunograptus • †Chiloporella • †Chlidochirus • †Chlidochirus springeri • †Chondrites • †Chonetes • †Chonetes aurora – tentative report • †Chonetes deflectus • †Chonetes minutus • †Chonetes mucronatus – tentative report • †Chonetina • †Chonetina choteauensis • †Chonetinella • †Chonetinella flemingi • †Chonetinella verneuilana • †Chonetinella verneuiliana • †Cincinnaticrinus • †Cincinnatidiscus • †Cincinnetina'' • †Cincinnetina meeki • †Cincinnetina multisecta • †Cirratriradites • †Cirratriradites annulatus • †Cladochonus • †Cladopora • †Cladopora bifurcata • †Cladopora crassa • †Cladopora lucasensis • †Cladopora minuitissima • †Cladopora roemeri • †Cladoselache'' • †Cladoselache clarki • †Clarkesvillia • †Clathrodictyon • †Clathrodictyon confertum • †Clathrospira • †Claudeonychia – type locality for genus • †Claudeonychia babini – type locality for species • †Cleionychia • †Clemetaocrinus • †Clemetaocrinus ohioensis • †Clevelandodendron • †Clevelandodendron ohioensis • †Climacograptus'' • †Clinopistha • †Clinopistha radiata • †Coelocaulus • †Coelocaulus desiderata • †Coelocaulus strebloceras – tentative report • †Coeloclema • †Coeloclema oweni • †Coenites • †Coleolus • †Coleolus iowensis • †Colosteus'' • †Colosteus scutellatus – type locality for species • †Columnaria • †Columnaria calicina • †Comasphaeridium • †Comasphaeridium caesariatum • †Composita • †Composita subtilita • †Compsocrinus • †Compsocrinus harrisi • †Conchidium • †Conradidium • †Conradidium firmamentum • †Constellaria • †Conularia • †Conularia formosa • †Convolutispora • †Convolutispora mellita • †Cordaianthus • †Cordaites • †Cordaites principalis – or unidentified comparable form • †Cornellites • †Cornellites flabellum • †Cornulites'' • †Cornulites flexuosus • †Corocrinus • †Corocrinus noduosus • †Corynotrypa • †Corynotrypa delicatula • †Corynotrypa inflata • †Corythoecia • †Corythoecia dichoptera • †Costatulites • †Costatulites richmondensis • †Cranaena • †Cranaena romingeri • Craniella • †Craniella hamiltonae • †Crassisphaeridium • †Crassisphaeridium inusitatum • †Crassispora • †Crassispora kosankei • †Crenistriella • †Crenistriella rotalinea • †Crenulazona • †Crenulazona angulata • †Crepipora • †Crurithyris • †Crurithyris planoconvexa • †Cryptolithus • †Cryptolithus tesselata • †Ctenacanthus • †Ctenacanthus compressus • †Ctenerpeton • †Ctenerpeton remex – type locality for species • †Ctenobolbina • †Ctenobolbina ciliata • †Ctenobolbina duryi • †Ctenobolbina hammeli • †Ctenodonta • †Ctenodonta madisonensis • †Ctenodonta recurva • †Ctenospondylus • †Ctenospondylus ninevehensis • †Cuffeyella • †Cuffeyella arachnoidea • †Cunctocrinus • †Cunctocrinus fortunatus – type locality for species • †Cuneamya • †Cuneamya elliptica • †Cuneamya miamiensis • †Cuneamya scapha • †Cupularostrum • †Cupularostrum prolificum • †Cupulocrinus • †Cycloconcha • †Cyclocystoides • †Cyclogranisporites • †Cyclogranisporites microgranus • †Cyclogranisporites minutus • †Cyclogranisporites obliquus • †Cyclogranisporites orbicularis • †Cyclonema • †Cyclonema bilix • †Cyclonema gyronemoides • †Cyclonema humerosum • †Cyclonema minuta • †Cyclopteris'' • †Cyclopteris orbicularis • †Cyclopteris trichomanoides • †Cyclora • †Cyclora depressa • †Cyclora hoffmani • †Cyclora parvula • †Cyclora pulcella • †Cyclozyga • †Cyclozyga attenuata – type locality for species • †Cyclozyga mirabilis • †Cylindrocoelia • †Cylindrophyllum • †Cylindrophyllum delicatulum • †Cylindrophyllum delicatum • †Cylindrophyllum profundum • †Cymatiosphaera • †Cymatiosphaera acinosa • †Cymatiosphaera adaiochorata • †Cymatiosphaera brevicrista • †Cymatiosphaera daioariochora • †Cymatiosphaera labyrinthica • †Cymatiosphaera parvicarina • †Cymatiosphaera rhacoamba • †Cymatiosphaera velicarina • †Cymatonota • †Cymatonota constricta • †Cymatonota cylindrica • †Cymatonota parallela • †Cymatonota recta • †Cymatonota semistriata • †Cymatospira • †Cymatospira alternodosa – type locality for species • †Cymatospira montfortianus • †Cyperites • †Cyphotrypa • †Cyphotrypa clarksvillensis • †Cypricardinia • †Cypricardinia indenta • Cypridina • †Cypridina herzeri • †Cyrtentactinia • †Cyrtentactinia cibdelosphaera • †Cyrtentactinia primotica • †Cyrtina • †Cyrtina alpenensis • †Cyrtina hamiltonensis • †Cyrtina umbonata • †Cyrtocerina • †Cyrtodonta • †Cyrtodonta halli • †Cyrtodontula • †Cyrtolites • †Cyrtolites claysferryensis • †Cyrtolites inornatum • †Cyrtolites ornatus • †Cyrtolites retrorsus • †Cyrtospira • †Cyrtospira directus • †Cyrtospirifer'' • †Cystaster • †Cystiphylloides • †Cystiphylloides americanum • †Cystodictya • †Cystodictya hamiltonensis • †Cystodictya incisurata • Cythere • †Cythere ohioensis • Cytherella • †Cytherella unioniformis ==D==

• †Dalmanella • †Danaeites • †Danaeites emersonii • †Decadocrinus'' • †Decadocrinus hughwingi • †Decadocrinus stewartae • †Decadocrinus wrightae • †Deceptrix • †Deceptrix albertina • †Dechenella • †Dechenella alpenensis • †Dechenella lucasensis • †Dekayella • †Dekayia • †Deltodus • †Deltoidospora • †Deltoidospora levis • †Deltoidospora priddyi • †Denayella • †Denayella rotalia • †Dendrocrinus • †Dendrocrinus daytonensis • †Derbyia • †Derbyia crassa • †Dermatostroma • †Dermatostroma scabrum • †Desmoinesia • †Desmoinesia muricatina • †Devonalosia • †Devonalosia wrightorum • †Devonochonetes • †Devonochonetes coronatus • †Devonochonetes fragilis • †Devonochonetes scitulus • †Devonorhineoderma • †Devonorhineoderma hyphantes • †Diaphorochroa • †Diaphorochroa ganglia • †Dicalamophyllum • †Diceratosaurus'' • †Diceratosaurus brevirostris – type locality for species • †Dicranopora • †Dicranopora emacerata • †Dictyoclostus • †Dictyoclostus semireticulatus • †Dictyonema • †Dictyotomaria • †Dictyotomaria capillaria • †Dictyotomaria scitula – or unidentified comparable form • †Diestoceras • †Diestoceras eos • †Diestoceras indianense • †Diestoceras shideleri • †Diexallophasis • †Diexallophasis absona • †Diexallophasis cuspidis • †Dinichthys • †Dinichthys herzeri • †Dinophyllum • †Dinophyllum semilunum • †Dinophyllum stokesi • †Dinorthis • †Dinorthis carleyi • †Diphyphyllum • †Diploceraspis'' • †Diplograptus • †Diplograptus recurrens • Discina • †Discotrypa • †Dithyrocaris • †Dithyrocaris neptuni – or unidentified comparable form • †Ditomopyge • †Ditomopyge decurtata • †Ditomopyge scitula • †Divietipellis • †Divietipellis robusta • †Dolichopterus'' • †Dolichopterus asperatus • †Donaldiella • †Donaldina • †Donaldina bellilineata – or unidentified comparable form • †Donaldina pygmaea – tentative report • †Donaldina robusta – type locality for species • †Donaldina stevensana – type locality for species • †Dorsennidium • †Dorsennidium patulum • †Doryblatta – type locality for genus • †Doryblatta longipennis – type locality for species • †Douvillina • †Douvillina distans • †Drepanella • †Drepanella richardsoni • †Drepanoistodus • †Drymocrinus • †Drymocrinus geniculatus • †Dunbarella • †Dunbarella knighti – or unidentified comparable form • †Dunbarella striata • †Dunkleosteus'' • †Dunkleosteus raveri – type locality for species • †Dvorakia • †Dystactocrinus • †Dystactocrinus constrictus • †Dystactospongia ==E==

• †Ecclimadictyon • †Ecdyceras • †Ecdyceras foerstei • †Echinocaris • †Echinocaris multinodosa • †Echinocaris multispinosis • †Echinocaris ohioensis – type locality for species • †Echinocaris pulchra – type locality for species • †Echinocaris punctata • †Echinocaris sublevis • †Echinocoelia • †Echinoconchus • †Echinoconchus punctatus • †Echinolichas • †Echinolichas lucasensis • †Ecmelostoiba • †Ecmelostoiba asymmetrica • †Ecmelostoiba leptoderma • †Economolopsis • †Economolopsis anodontoides • †Ectenocrinus • †Ectenocrinus simplex • †Ecthymabrachion • †Ecthymabrachion camptos • †Edmondia • †Edmondia aspenwallensis • †Edmondia aspinwallensis • †Edmondia nebrascensis • †Edmondia nodulifera – type locality for species • †Edon • †Edon oblonga • †Elasmonema • †Elasmonema bellatula • †Elasmonema clarki • †Elasmonema corrugata – type locality for species • †Elasmonema imitator • †Elasmonema lichas • †Eldredgeops'' • †Eldredgeops rana • †Elegantilites – tentative report • †Elektoriskos • †Elektoriskos apodasmios • †Elektoriskos arcetotricus • †Elektoriskos lasios • †Eliasopora • †Eliasopora stellatum • †Elita • †Elpe • †Elpe cincinnatiensis • †Elpe irregularis • †Elpe ulrichi • †Elrodoceras • †Emmonsia • †Emmonsia arbuscula • †Emmonsia radiciformis • †Endelocrinus • †Endelocrinus kieri – type locality for species • †Endoceras'' • †Endosporites • †Endosporites globiformis • †Endosporites plicatus • †Endosporites zonalis • †Endothyra • †Endothyra kennethi • †Endothyranella • †Endothyranella inflata • †Endothyranella intermissa • †Endothyranella minuta – or unidentified comparable form • †Endothyranella nitida – or unidentified comparable form • †Endothyranella stormi – or unidentified comparable form • †Entactinia • †Entactinia additiva • †Entactinia cometes • †Entactinia crustescens • †Entactinia exilispina • †Entactinia herculea • †Entactinia micula • †Entactinia monalloea • †Entactinia pantosompha • †Entactinia paula • †Entactinia quantilla • †Entactinia somphorhips • †Entactinia spongites • †Entactinia sychnacanthina • †Entactinosphaera • †Entactinosphaera diplostraca • †Entactinosphaera dystactotata • †Entactinosphaera echinata – tentative report • †Entactinosphaera erebenna • †Entactinosphaera esostrongyla • †Entactinosphaera euthlasta • †Entactinosphaera fredericki • †Entactinosphaera hapala • †Entactinosphaera hystricosa • †Entactinosphaera inusitata • †Entactinosphaera polyacanthina • †Entactinosphaera riedeli • †Entactinosphaera symphypora • †Entactinosphaera tretactinia • †Entactinosphaera variacanthina • †Entactinosphaerap • †Entactinosphaerap alimbola • †Enteletes • †Enteletes hemiplicata • †Eochonetes • †Eochonetes clarksvillensis • †Eochonetes clarkvillensis • †Eomarginifera • †Eomarginifera longispinus • †Eomyelodactylus • †Eomyelodactylus rotundatus • †Eomylodactylus • †Eomylodactylus rotundatus • †Eotrophina • †Ephelopalla • †Ephelopalla elongata • †Ephelopalla talea • †Erettopterus'' • †Erettopterus saetiger • †Eridoconcha • †Eridoconcha rugosa • †Eridorthis • †Eridotrypa • †Erisocrinus • †Erisocrinus typus • †Erpetosaurus • †Erpetosaurus radiatus – type locality for species • †Escharopora • †Estiastra • †Estiastra culcita • †Estiastra dilatostella • †Estiastra rugosa • †Eucalyptocrinites'' • †Euchondria • †Euchondria neglecta • †Euchondria ohioensis – type locality for species • †Euchondria pellucida • †Euconospira • †Euconospira turbiniformis • †Eunicites • †Euomphalus • †Euomphalus planodorsatus • †Euomphalus similis • †Euphemites • †Euphemites carbonarius • †Euphemites enodis – type locality for species • †Euphemites multiliratus – type locality for species • †Euphemites nodocarinatus • †Euphemites subglobosus • †Euphemites vittatus • †Eurymya • †Euryocrinus – tentative report • †Euryocrinus laddii • †Eurypterus'' • †Eurypterus ornatus • †Eusauropleura – type locality for genus • †Eusauropleura digitata – type locality for species • †Eutaxocrinus • †Eutaxocrinus wideneri • †Evenkiella • †Exilisphaeridium • †Exilisphaeridium simplex • †Exochoderma • †Exochoderma irregulare • †Exochoderma ramibrachium ==F==

• †Faberia • †Faberia anomala • †Faberoceras • †Favistella • †Favosites'' • †Favosites dentistabulatus • †Favosites discoideus • †Favosites favosus • †Favosites hamiltonae • †Favosites hamiltoniae • †Favosites hisingeri • †Favosites turbinatus • †Fayettoceras • †Fenestella • †Fenestella shumardi • †Fenestrellina • †Fenestrellina rockportensis • †Fistulipora • †Fistulipora vesiculata • †Flexicalymene'' • †Flexicalymene meeki • †Florinites • †Florinites florini • †Florinites mediapudens • †Florinites milloti • †Florinites similis • †Florinites visendus • †Foerstia • †Foerstia ohioensis • †Fusispira • †Fusulina • †Fusulina secalica 0 Links ==G==

• †Gamizyga • †Gamizyga corpulentissima • †Gamizyga girtyi – type locality for species • †Gamizyga morningstarae • †Gerablattina • †Gerablattina richmondiana – type locality for species • †Gigantopteris – or unidentified comparable form • †Gilbertsocrinus'' • †Gilbertsocrinus alpenensis • †Gilbertsocrinus ohioensis • †Gillespieisporites • †Gillespieisporites venustus • †Girtyspira • †Girtyspira minuta • †Glabrocingulum • †Glabrocingulum beedei – type locality for species • †Glabrocingulum grayvillense • †Glabrocingulum stellaeformis • †Glabrocingulum wannense – or unidentified comparable form • †Globodoma • †Globodoma nodosa • †Globozyga • †Globozyga reticulata • †Globozyga subcorpulenta – type locality for species • †Glossites • †Glossites subtenuis • †Glyptocardia • †Glyptocardia speciosa • †Glyptocrinus'' • †Glyptocrinus richardsoni • †Glyptorthis • †Glyptorthis daytonensis – type locality for species • †Glyptorthis fausta – type locality for species • †Glyptorthis insculpta • †Gomphostrobus • †Goniasma • †Goniasma lasallense – or unidentified comparable form • †Gonioloboceras • †Gorbyoceras • †Gorogonisphaeridium • †Gorogonisphaeridium absitum • †Gorogonisphaeridium elongatum • †Gorogonisphaeridium evexispinosum • †Gorogonisphaeridium ohioense • †Gorogonisphaeridium plerispinosum • †Gorogonisphaeridium separatum • †Gosseletia • †Gosseletia triquetra • †Gosselettia • †Gosselettia triquetra • †Graciloceras • †Grammysia • †Grammysia arcuata • †Grammysia bellatula • †Grammysia bisulcata • †Grammysia constricta • †Grammysia nodocostata • †Grammysia sylvanensis • †Grammysioidea • †Granasporites • †Granasporites medius • †Granulatisporites • †Granulatisporites granulatus • †Granulatisporites minutus • †Granulatisporites parvus • †Granulatisporites piroformis • †Graptodictya • †Graptodictya perelegans • †Grewingkia'' • †Grewingkia rusticum • †Guttatisphaeridium • †Guttatisphaeridium pandum • †Gypidula ==H==

• †Habrostroma • †Habrostroma beachvillensis • †Habrostroma larocquei • †Habrostroma marpleae • †Hallinetes • †Hallinetes setigera • †Hallopora'' • †Hallopora bassleri • †Hallopora flabellaris • †Hallopora libana • †Hallopora nicklesi • †Hallopora subnodosa • †Halysites • †Halysites catenularis • †Halysites catenularius • †Halysites nitidus • †Hamiltonella • †Hamiltonella punctulifera • †Haplentactinia • †Haplentactinia arrhinia • †Haplentactinia rhinophyusa • †Hawletrochus • †Hawletrochus macrostomus • †Hebertella • †Hebertella alveata • †Hebertella occidentalis • †Hebertella sinuata • †Hebertella subjugata • †Hebertocaris • †Hebertocaris wideneri • †Hederella • †Hederella alpenensis • †Hederella bilineata • †Hederella cirrhosa • †Hederella concinnoides • †Hederella delicatula • †Hederella filiformis • †Hederella magna • †Hederella parvirugosa • †Hederella rectifurcata • †Hederella reimanni • †Hederella thedfordensis • †Hederella vagans • †Helcionopsis • †Helicelasma • †Helicelasma rusticum • †Helicotoma • †Heliolites • †Heliophyllum'' • †Heliophyllum bathycalyx • †Heliophyllum halli • †Heliophyllum microcarinatum • †Helminthochiton • †Helminthochiton simplex • †Helminthozyga • †Helminthozyga costellata – type locality for species • †Helminthozyga undulata – type locality for species • †Helopora • †Helopora inexpectata • †Hemicystites • †Hemiphragma • †Hemizyga • †Hemizyga attenuata • †Hemizyga elegans – or unidentified comparable form • †Hemizyga illineata – or unidentified comparable form • †Heracloceras – tentative report • †Heracloceras inelegans – tentative report • †Hercostrophia • †Hercostrophia robusta • †Heslerodus • †Heslerodus divergens • †Hessonia • †Hessonia priscus • †Heterocrinus • †Heterocrinus exiguus • †Heterocrinus exilis • †Heterocrinus heterodactylus • †Heterocrinus juvenis • †Heterocrinus pentagonus • †Heteronema – tentative report • †Heterophrentis • †Heterophrentis simplex • †Heterorthina • †Heterorthina fairmountensis • †Heterotrypa • , also known as a Petoskey stone †Hexagonaria'' • †Hexagonaria anna • †Hexagonaria stewartae • †Hexagonaria tabulata • †Hexagonaria truncata • †Hexameroceras • †Hindella • †Hindia • †Hippocardia • †Hippocardia herricki – type locality for species • †Hippocardia hydei – type locality for species • †Hippocardia monroica • †Hippocardia ohioense • †Hiscobeccus • †Hiscobeccus capax • †Hoareicardia • †Hoareicardia cunea • †Holoeciscus • †Holoeciscus auceps • †Holopea'' • †Holoptychus – or unidentified comparable form • †Holtedahlina • †Holtedahlina sulcata • †Homotrypa • †Homotrypa wortheni • †Homotrypella • †Homotrypella dubia • †Hormotoma • †Hormotoma centervillensis – type locality for species • †Hormotomina • †Hormotomina maia • †Hudsonaster • †Hudsonaster incomptus • †Hustedia • †Hustedia mormoni • †Hyattidina • †Hyolithes'' • †Hyolithes dubius • †Hyolithes parviusculus • †Hyolithes versaillensis • †Hypergonia • †Hypergonia jonathanensis – type locality for species • †Hyperoblastus • †Hyperoblastus reimanni • †Hyphantozyga • †Hyphantozyga cancellata – type locality for species • †Hyphantozyga fusiforma – type locality for species • †Hyphantozyga gracilis • †Hyphantozyga grandis – type locality for species • †Hyphantozyga knighti • †Hyphantozyga perattenuata • †Hyphantozyga pulchra • †Hyphantozyga textilis – type locality for species • †Hypselentoma • †Hypselentoma inornata • †Hystriculina • †Hystriculina wabashensis ==I==

• †Ianthinopsis • †Ianthinopsis melanoides – type locality for species • †Ibanocrinus • †Ibanocrinus petalos • †Ichthyerpeton • †Ichthyerpeton squamosum – type locality for species • †Icriodus • †Icriodus angustus • †Icriodus arkonensis • †Icriodus brevis • †Icriodus eriensis • †Icriodus excavatus • †Icriodus expansus • †Icriodus janeae • †Icriodus lindensis • †Icriodus obliquimarginatus • †Icriodus ohioensis • †Icriodus platyobliquimarginatus • †Icriodus regularicrescens • †Indospora • †Indospora stewartii • †Intrapora • †Intrapora irregularis • †Iocrinus • †Ischyrodonta • †Ischyrodonta truncata • †Ischyrodonta unionoides • †Isodectes • †Isodectes obtusus – type locality for species • †Isonema • †Isonema depressum • †Isorophus • †Isorophus austini • †Isorophus holbrooki • †Isorophus warrenensis • †Isorthoceras • †Isorthoceras albersi • . Isotelus is the state fossil of Ohio. †Isotelus'' • †Isotelus maximus • †Isotelus megistos ==J==

• †Jedria • †Jedria ventrica • †Jonesella • †Jonesella crepidiformis • †Jonesella pedigera • †Jonesites • †Jonesites inornatus • †Jonesites marginatus • †Jugiaster • †Jugiaster speciosus • †Juresania • †Juresania ovalis ==K==

• †Kindleoceras • †Kionoceras'' • †Kockelella • †Kockelella ortus • †Kockelella ranuliformis • †Kockelella walliseri • †Kophinocrinus – tentative report • †Kophinocrinus magrumi – tentative report • †Kyreocrinus • †Kyreocrinus constellatus ==L==

• †Labechia • †Laccoprimitia • †Laccoprimitia centralis • †Laevigatosporites • †Laevigatosporites desmoinesensis • †Laevigatosporites globosus • †Laevigatosporites medius • †Laevigatosporites minimus • †Laevigatosporites minor • †Laevigatosporites ovalis • †Laevigatosporites subadnatoides • †Laevigatosporites vulgaris • †Lambeoceras • †Lanthanaster • †Lanthanaster cruciformis – type locality for species • †Lasiograptus • †Latericriodus • †Latericriodus latericrescens • †Latosporites • †Latosporites minutus • †Lechritrochoceras • †Leioclema • †Leioclema alpenense • †Leioclema alpense • †Leiorhynchus • †Leiorhynchus kelloggi • †Leiorhynchus laura • †Leiorhynchus lucasi • †Leiosphaeridia • †Leiotriletes • †Leiotriletes granoornatus • †Leiotriletes levis • †Leiotriletes microsaetosus • †Leiotriletes pseudaculeatus • †Leiotriletes subadnatoides • †Lepadocystis • †Leperditia • †Leperditia glabra • †Lepidocoleus • †Lepidocyclus • †Lepidocyclus perlamellosum • †Lepidocystis • †Lepidodendron'' • †Lepidodendron aculeatum • †Lepidodendron andrewsi • †Lepidodendron jaraczewskii – or unidentified comparable form • †Lepidodendron scutatum • †Lepidolites • †Lepidophloios • †Lepidophloios larcinus • †Lepidophloios vaningeni • †Lepidostrobophyllum • †Leptaena • †Leptaena gibbosa • †Leptaena richmondensis • †Leptobolus • †Leptobolus insignis • †Leptodesma • †Leptodesma ausablensis • †Leptodesma matheri – or unidentified comparable form • †Leptodesma rhysema – type locality for species • †Leptograptus • †Leptophractus – type locality for genus • †Leptophractus obsoletus – type locality for species • †Leptopoterion • †Leptoptygma • †Leptoptygma newtonensis – type locality for species • †Leptotrypa • †Leptotrypella • †Leptotrypella ohioensis • †Lescuropteris • †Lescuropteris moorii • †Levizygopleura • †Levizygopleura inornata • †Levizygopleura williamsi • †Lichenocrinus • †Lichenocrinus tuberculata • †Limipecten • †Limipecten lamellus – type locality for species • †Limoptera • †Limoptera curvata • †Limoptera macroptera • Lingula • †Lingula carbonaria • †Lingula meeki • †Lingula melie • †Lingulichnus • †Lingulops • †Linoproductus • †Linoproductus cora • †Linoproductus prattenianus • †Linopteris • †Linopteris muensteri • †Linopteris neuropteroides • †Lioclemella • †Liospira • †Liospira affinis • †Liospira depressum – type locality for species • †Liroceras – tentative report • †Lodanaria • †Lodanaria quadricarinata – type locality for species • †Logocrinus – tentative report • †Logocrinus brandoni – tentative report • †Longispina • †Longispina lissohybus • †Longstaffia – tentative report • †Longstaffia centervillensis – type locality for species • †Lopholasma • †Lopholasma delawarensis • †Lophonychia • †Lophonychia cordata • †Lophophyllidium • †Lophophyllidium profundum • †Lophospira • †Lophospira milleri • †Lophospira perangulata • †Lophotriletes • †Lophotriletes granoornatus • †Loxomma'' • †Loxomma lintonensis – type locality for species • †Loxonema • †Loxonema pikensis • †Loxoplocus • †Loxoplocus gothlandicus – type locality for species • †Lycospora • †Lycospora granulata • †Lycospora micropapillata • †Lycospora orbicula • †Lycospora pellucida • †Lycospora pusilla • †Lycospora subjuga • †Lycospora torquifer • †Lyopora • †Lyopora goldfussi • †Lyriopecten • †Lyriopecten mitchelli • †Lyrodesma • †Lyrodesma major ==M==

• †Macrerpeton • †Macrerpeton huxleyi – type locality for species • †Macrochilina • †Macrochilina humilis • †Maelonoceras • †Manitoulinoceras • †Manitoulinoceras gyroforme • †Manitoulinoceras williamsae • †Manticoceras'' • †Manticrinus • †Manticrinus exaitos • †Marsupiocrinus • †Maryonychia • †Maryonychia concordensis • †Mastigograptus • †Mastigograptus strictus • †Mazostachys • †Mazostachys compacta – type locality for species • †Mediospirifer • †Mediospirifer audaculus • †Meekopinna • †Meekopinna americana • †Meekospira • †Meekospira peracuta • †Megacanthopora • †Megacanthopora fallacis – or unidentified comparable form • †Megacystites • †Megalocephalus'' – type locality for genus • †Megalocephalus lineolatus – type locality for species • †Megalograptus • †Megastrophia • †Megastrophia concava • †Megistocrinus • †Megistocrinus depressus • †Melocrinus • †Melocrinus clarkei • †Meristospira • †Meristospira michiganensis • †Merocrinus • †Mesocoelia • †Mesocoelia obstipisutura • †Mesopalaeaster • †Mesopalaeaster finei • †Mesopalaeaster wilberanus • †Mesothyra • †Mesotrypa • †Mesotrypa orbiculata • †Metaxys • †Metaxys fossa – type locality for species • †Miamoceras • †Michelinoceras • †Micrhystridium • †Micrhystridium adductum • †Micrhystridium complurispinosum • †Micrhystridium erugatum • †Micrhystridium flexibile • †Micrhystridium inusitatum • †Micrhystridium profusam • †Microceras • †Microdoma • †Microdoma tricarinatus • †Microptychis • †Microptychis cerithiformis • †Microptychis expetendus • †Microptychis occabus – type locality for species • †Microptychis turbineus • †Microreticulatisporites • †Microreticulatisporites harrisonii • †Microreticulatisporites nobilis • †Microreticulatisporites sulcatus • †Milleratia • †Mitrospermum • †Mitrospermum vinculum • †Mixoneura • †Modiolodon • †Modiolodon subovalis • †Modiolopsis • †Modiolopsis capax • †Modiolopsis modiolaris • †Modiolopsis versaillesensis • Modiolus • †Modiolus fountainensis • †Modiolus radiatus – type locality for species • †Modiolus waverliensis • †Modiomorpha • †Modiomorpha concentrica • †Modiomorpha concentricum • †Modiomorpha mytiloides • †Modiomorpha subalata • †Modiomorpha subalta • †Molgophis – type locality for genus • †Molgophis macrurus – type locality for species • †Monotrypa • †Monticulipora • †Mourlonia • †Mourlonia plena • †Mourlonia textus • †Mucrospirifer'' • †Mucrospirifer alpenensis • †Mucrospirifer grabaui – or unidentified comparable form • †Mucrospirifer mucronatus • †Mucrospirifer prolificus • †Multiplicisphaeridium • †Multiplicisphaeridium anastomosis • †Multiplicisphaeridium verrucarum • †Muraticavea • †Muraticavea enteichia • †Murchisonia • †Murchisonia anderdoniae • †Murchisonia dublinensis – type locality for species • †Murchisonia gracilicrista • †Murchisonia intermedia – type locality for species • †Murchisonia leda • †Murchisonia minuta • †Murchisonia sibleyensis • †Murchisonia subcarinata • †Murchisonia subulata • †Myalina • †Myalina pernaformis • †Myelodactylus – or unidentified comparable form • †Mytilarca • †Mytilarca cordata ==N==

• †Naevisphaeridium • †Naevisphaeridium plenilunium • †Narthecoceras • †Narthecoceras dunni – type locality for species • †Naticopsis'' • †Naticopsis aequistriata – type locality for species • †Naticopsis comperta • †Naticopsis genevievensis • †Naticopsis levis • †Naticopsis ziczac – type locality for species • †Navifusa • †Navifusa drosera • †Neilsonia • †Neilsonia uninodocarinata • †Neochonetes • †Neochonetes granulifer • †Neochonetes variolata • †Neospirifer • †Neospirifer cameratus • †Neospirifer dunbari • †Nephriticeras – tentative report • †Nereidavus • †Nereidavus varians • †Neumatoceras • †Neuropteris'' • †Neuropteris heterophylla • †Neuropteris ovata • †Neuropteris scheuchzeri • †Nicholsonella • †Nicholsonella peculiaris • †Nicollidina • †Nicollidina remscheidensis • †Nodonema • †Nodonema granulatum • †Nucleocrinus • †Nucleocrinus elegans – or unidentified comparable form • Nucula'' • †Nucula corbuliformis • Nuculana • †Nucularca • †Nucularca cingulata • †Nuculites • †Nuculites faberi • †Nuculites fabula • †Nuculites oblongatus • †Nuculites triqueter • †Nuculopsis • †Nuculopsis beyrichi • †Nuculopsis elongata • †Nuculopsis girtyi • †Nuculopsis shumardana – or unidentified related form • † Nyassa • †Nyassa recta ==O==

• †Odonterpeton'' – type locality for genus • †Odonterpeton triangulare – type locality for species • †Odontopleura • †Odontopteris • †Odontopteris aequalis • †Odontopteris brardii • †Oehlertella • †Oehlertella stoutella • †Oestocephalus – type locality for genus • †Oestocephalus amphiuminum – type locality for species • †Ohiocrinus • †Ohiocrinus laxus • †Ohiocrinus oehanus • †Olenoides • †Onchus • †Oncoceras • †Onniella • †Onychochilus • †Onychochilus abruptum – type locality for species • †Oomoceras • †Ophiacodon'' • †Ophiacodon uniformis – or unidentified comparable form • †Opisthoptera • †Opsiocrinus • †Opsiocrinus mariae • †Orbiculoidea • †Orbiculoidea capuliformis • †Orbiculoidea herzeri • †Orbiculoidea missouriensis • †Orbiculoidea newberryi • †Orthis – tentative report • †Orthoceras • †Orthoceras trusitum • †Orthoceras type locality for species – informal • †Orthodesma • †Orthodesma canaliculatum • †Orthonema • †Orthonema salteri • †Orthonema subtaeniatum • †Orthonota • †Orthonota undulata • †Orthonybyoceras – tentative report • †Orthonychia • †Orthonychia chesterense – tentative report • †Orthonychia herzeri • †Orthonychia infabricatus – type locality for species • †Orthonychia parva • †Orthonychia sciotoensis – type locality for species • †Orthonychia waverlyensis • †Orthopleura • †Orthorhynchula • †Orthorhynchula linneyi • †Ortonella • †Oulodus • †Oulodus equirectis • †Oulodus equirectus • †Oxyprora • †Oxyprora missouriensis • †Ozarkodina • †Ozarkodina bohemica • †Ozarkodina confluens • †Ozarkodina remscheidenesis • †Ozarkodina sagitta • †Ozarkodina tillmani ==P==

• †Pachydictya • †Pachydictya bifurcata • †Paiderocrinus • †Paiderocrinus asketos • †Paiderocrinus ochthos • †Palacanthus • †Palacanthus acutus • †Palaeocapulus • †Palaeocapulus equilateralis • †Palaeocapulus morsei – type locality for species • †Palaeoconcha • †Palaeolima • †Palaeolima retifera • †Palaeolima triplistriata • †Palaeoneilo • †Palaeoneilo bedfordensis • †Palaeoneilo bownockeri • †Palaeoneilo constricta – or unidentified related form • †Palaeoneilo oweni • †Palaeonucula • †Palaeonucula lunulata – type locality for species • †Palaeonucula subrotundata • †Palaeopalaemon • †Palaeopalaemon elegans – type locality for species • †Palaeophycus • †Palaeoporites • †Palaeoscenidium • †Palaeoscenidium cladophorum • †Palaeoscenidium quadriramosum • †Palaeostachya • †Palaeostachya aperta • †Palaeostachya decacnema • †Palaeostachya elongata • †Palaeostachya ovalis • †Palaeostachya trabeculata – type locality for species • †Palaeostylus • †Palaeostylus marvinwelleri • †Palaeostylus minuta • †Palaeostylus venustus • †Palaeotrochus • †Palaeotrochus kearnyi • †Palaeozygopleura • †Palaeozygopleura hamiltoniae • †Palaeozygopleura joani • †Palaeozygopleura laeviusculum • †Palaeozygopleura parvula • †Palaeozygopleura sibleyensis • †Paleofavosites • †Paleofavosites prolificus • †paleoporites • †Paleschara • †Paliphyllum • †Paliphyllum brassfieldense • †Paliphyllum primarium • †Paliphyllum regulare • †Panderodus • †Panderodus unicostatus • †Paracyclas • †Paracyclas lirata • †Paracyclas proavia • †Paracyrtolites • †Paracyrtolites carinatus • †Paragoniozona • †Paragoniozona granulostriata – or unidentified comparable form • †Parajuresania • †Parajuresania nebrascensis • †Paraliospira • †Paraliospira rugata • †Parallelocrinus • †Parallelocrinus sturgeoni – type locality for species • †Parallelodon • †Parallelodon irvinensis • †Parallelodon obsoletus • †Parallelodon tenuistriatus • †Paraspirifer'' • †Paraspirifer bownockeri • †Parazyga • †Parvohallopora • †Parvohallopora onealli • †Parvohallopora ramosa • †Pasceolus • †Pasceolus camdenensis • †Patellilabia • †Patelliocrinus – type locality for genus • †Patelliocrinus planus – type locality for species • †Pattersonia • †Paupospira • †Paupospira bowdeni • †Paupospira trilineata – type locality for species • †Paupospira tropidophora • †Pecopteris'' • †Pecopteris arborescens • †Pecopteris candolleana • †Pecopteris cyathea • †Pecopteris hemitelioides • †Pecopteris lamuriana • †Pecopteris miltonii • †Pecopteris unita • †Penniretepora • †Penniretepora irregularis – or unidentified comparable form • †Pennoceras • †Pennoceras seamani • †Pentamerus • †Permophorus • †Permophorus oblongus • †Permophorus subcostatus • †Permophorus tropidophorus • †Pernopecten • †Pernopecten ohioensis • †Pernopecten prosseri • †Peronopora • †Peronopora decipiens • †Petalodus • †Petalodus ohioensis'' • †Petigopora • †Petigopora offfula • †Petraster • †Petrocrania • †Petrocrania hamiltonensis • †Petrocrania laelia • †Petrocrania modesta • †Petrocrania scabiosa • †Petrozium • †Petrozium pelagicum • †Pharkidonotus • †Pharkidonotus breyeri – type locality for species • †Pharkidonotus labioreflexus – type locality for species • †Pharkidonotus percarinatus • †Phestia • †Phestia inflata • †Phestia pandoraeformis • †Philhedra • †Philhedra crenistriatula • . †Phlegethontia'' – type locality for genus • †Phlegethontia linearis – type locality for species • †Phlegethontia longissima – type locality for species • †Pholadella • †Pholadella radiata • †Pholadomorpha • †Pholadomorpha pholadiformis • †Pholidops • †Pholidostrophia • †Pholidostrophia geniculata • †Pholidostrophia gracilis • †Pholidostrophia nacrea • †Phragmoceras • †Phragmolites • †Phragmolites elegans – type locality for species • †Phragmosphaera • †Phragmosphaera lyra • †Phylloporina • †Phyloblatta • †Phyloblatta jeffersoniana – type locality for species • †Phymatopleura • †Phymatopleura brazoensis • †Phymatopleura nodosa • †Phyrgilocrinus • †Phyrgilocrinus batheri • †Phyrtosaster – type locality for genus • †Phyrtosaster casteri – type locality for species • †Physonemus • †Physonemus striatus – or unidentified comparable form • †Physotomya • †Pianodesma • Pinna • †Pinna missouriensis • †Pityosporites • †Pityosporites westphalensis • †Placopterina • †Placopterina ohioensis – type locality for species • †Plaesiomys'' • †Plaesiomys subquadrata • †Plagiascetus – type locality for genus • †Plagiascetus lateralis – type locality for species • †Plagioglypta • †Planalveolitella • †Planalveolitella parasitica • †Planisporites • †Planisporites granifer • †Planoendothyra • †Planoendothyra associata • †Planoendothyra evoluta • †Planoendothyra orbiculata • †Planoendothyra ovata – or unidentified comparable form • †Planoendothyra whitesidei – or unidentified comparable form • †Platyceras'' • †Platyceras attenuatum • †Platyceras bucculentum • †Platyceras carinatum • †Platyceras cymbium • †Platyceras erectum • †Platyceras lineatum • †Platyceras nasutum • †Platyceras rarispinum • †Platyceras subglobosa – type locality for species • †Platyceras thetis • †Platycoryphe • †Platyrhinops'' – type locality for genus • †Platyrhinops lyelli – type locality for species • †Platystrophia • †Platystrophia actilirata • †Platystrophia acutilirata • †Platystrophia annieana • †Platystrophia auburnensis • †Platystrophia clarksvillensis • †Platystrophia corryvillensis • †Platystrophia crassa • †Platystrophia cummingsi • †Platystrophia cypha • †Platystrophia elkhornensis • †Platystrophia foerstei • †Platystrophia hopensis • †Platystrophia laticosta • †Platystrophia moritura • †Platystrophia morrowensis • †Platystrophia nitida • †Platystrophia pauciplicata • †Platystrophia ponderosa • †Platystrophia sublaticosta • †Platystrophia wallowayi • †Plectodina • †Plectonotus • †Plectonotus boucoti • †Plectorthis • †Plectorthis aequivalvis • †Plectorthis fissicosta • †Plectorthis jamesi • †Plectorthis neglecta • †Plectorthis plicatella • †Plethospira • †Pleurodictyum'' • †Pleurodictyum cornu • †Pleurodictyum plana • †Pleuronotus • †Pleuronotus decewi • †Pleuroptyx – type locality for genus • †Pleuroptyx clavatus – type locality for species • †Pleurorthoceras • †Pleurorthoceras clarksvillense • †Plexadictyon • †Plocezyga • †Plocezyga acuminata • †Plocezyga conica • †Plocezyga cordiformis • †Plocezyga costata – type locality for species • †Plocezyga delicata • †Plocezyga excellens • †Plocezyga intermedia • †Plocezyga lineata • †Plocezyga lirata • †Plocezyga markae • †Plocezyga ornata – type locality for species • †Plocezyga ornatissima • †Plocezyga percostata • †Plocezyga perminuta • †Plocezyga regularia • †Plocezyga subnodosa • †Plocezyga turbinata • †Podolithus • †Poleumita • †Poleumita incarinatus • †Polidevcia • †Polidevcia bellistriata • †Polidevcia stevensiana • †Polyentactinia • †Polyentactinia craticulata • †Polyentactinia leptosphaera • †Polyentactinia plecta • †Polyentactinia polygonia • †Polygnathus'' • †Polygnathus eiflius • †Polygnathus intermedius • †Polygnathus linguiformis • †Polygnathus pseudofoliatus • †Polygnathus strongi • †Polygnathus xylus • †Polypora • †Polypora valida – or unidentified comparable form • Pontocypris • †Pontocypris acuminata • †Poroblattina • †Poroblattina brachyptera – type locality for species • †Poroblattina lata – type locality for species • †Poroblattina ohioensis – type locality for species • †Poroblattina richmondiana – type locality for species • †Poroblattina rotundata – type locality for species • †Posidonia • †Posidonia girtyi • †Praenucula • †Primiriopsis • †Primiriopsis punctulifera • †Primitia • †Primitia cincinnatiensis • †Primitia rudis • †Primitiella • †Primitiella claypolei • †Primitiella whitfieldi • †Probillingsites • †Probillingsites lebanonensis • Proboscina • †Proboscina auloporoides • †Proboscina frondosa • †Proctothylacocrinus • †Proctothylacocrinus esseri • †Proctothylacocrinus longus • †Productus • †Productus semireticulatua • †Proetus'' • †Promopalaeaster • †Promopalaeaster granulosus • †Promopalaeaster wykoffi • †Promytilus • †Promytilus pottsvillensis – type locality for species • †Propora • †Propora conferta • †Propora eminula • †Prosserella • †Prosserella lucasi • †Prosserella subtransversa • †Protaraea • †Protaraea richmondensis • †Protarea • †Protathyris – tentative report • †Protobalanus • †Protobalanus spinicoronatus – type locality for species • †Protocycloceras • †Protocycloceras rushense • †Protokionoceras • †Protoleptostrophia • †Protoleptostrophia perplana • †Protosalvinia • †Protosalvinia arnoldii • †Protosalvinia ravenna • †Protoscolex • †Prototaxites'' • †Prototaxites clevelandensis • †Pseudaviculopecten • †Pseudaviculopecten fasciculatus • †Pseudaviculopecten scabridus • †Pseudoactinodictyon • †Pseudoactinodictyon stearni • †Pseudoactinodictyon vagans • †Pseudoatrypa • †Pseudoatrypa devoniana • †Pseudobigalea • †Pseudobigalea crista • †Pseudocolpomya • †Pseudocolpomya miseneri • †Pseudolingula • †Pseudomonotis • †Pseudomonotis equistriata • †Pseudomonotis hawni • †Pseudomonotis millhorni – type locality for species • †Pseudomulceodens • †Pseudomulceodens cancellatus • †Pseudooneotodus • †Pseudooneotodus bicornis • †Pseudophorus • †Pseudophorus antiquus • †Pseudorthoceras • †Pseudorthoceras knoxense • †Pseudozygopleura • †Pseudozygopleura acuminata • †Pseudozygopleura angustata • †Pseudozygopleura assertonsoris • †Pseudozygopleura baltea – type locality for species • †Pseudozygopleura cirritus • †Pseudozygopleura contractus • †Pseudozygopleura deloi • †Pseudozygopleura eximia • †Pseudozygopleura funis • †Pseudozygopleura girtyi • †Pseudozygopleura gradatus • †Pseudozygopleura irrugata • †Pseudozygopleura kellettae – or unidentified comparable form • †Pseudozygopleura lanceolatus • †Pseudozygopleura limus • †Pseudozygopleura macra – or unidentified comparable form • †Pseudozygopleura mucronatus • †Pseudozygopleura multicostata – or unidentified comparable form • †Pseudozygopleura pagoda – or unidentified comparable form • †Pseudozygopleura palus – type locality for species • †Pseudozygopleura pandus • †Pseudozygopleura peoriense • †Pseudozygopleura pinquicula • †Pseudozygopleura plummeri – type locality for species • †Pseudozygopleura pluricostata • †Pseudozygopleura pugonis • †Pseudozygopleura pulchra • †Pseudozygopleura rectus • †Pseudozygopleura schucherti – or unidentified comparable form • †Pseudozygopleura scitula • †Pseudozygopleura scruposus • †Pseudozygopleura semicostata • †Pseudozygopleura sinuosior • †Pseudozygopleura subulatus • †Pseudozygopleura tenuivirga • †Pseudozygopleura variegata • †Psiloconcha • †Psiloconcha grandis • †Psiloconcha inornata • †Psiloconcha sinuata • †Pterinea • †Pterinea corrugatus • †Pterinea demissa • †Pterinopecten • †Pterinopecten undosus • †Pterochiton • †Pterochiton carbonarius • †Pterochiton spatulatus • †Pterospermella • †Pterospermella capitana • †Pterospermella latibalteus • †Pterospermella radiata • †Pterospermella solis • †Pterotheca • †Pterygotus'' • †Pterygotus carmani • †Ptilodictya • †Ptomatis • †Ptomatis proteiforme • †Ptotosalvinia • †Ptotosalvinia furcata • †Ptychocarpus • †Ptychocrinus • †Ptychomphalina • †Ptychomphalina lucina • †Ptychomphalina regulata • †Ptychopteria • †Ptychopteria flabellum • †Ptychospirina • †Ptychospirina varians • †Ptyonius • †Ptyonius marshii – type locality for species • †Pugnax • †Pugnax utah • †Punctatisporites • †Punctatisporites aerarius • †Punctatisporites glaber • †Punctatisporites minutus • †Punctatisporites obesus • †Punctatisporties • †Punctatisporties minutus • †Punctatosporites • †Punctatosporites granifer • †Punctatosporites minutus • †Punctatosporites rotundus • †Punctospirifer • †Punctospirifer kentuckensis • †Pustula • †Pustula pertenuis • †Pustulisphaeridium • †Pustulisphaeridium levibrachium • †Pyanomya • †Pycnocrinus • †Pyrenomeous ==Q==

• †Rafinesquina • †Rafinesquina alternata • †Rafinesquina loxorhytis • †Rafinesquina ponderosa • †Rafinesquina squamula • †Raistrickia • †Raistrickia crinita • †Raistrickia srinita • †Ramphoprion • †Raphistoma • †Rasmussenoceras • †Reinschospora • †Reinschospora magnifica • †Renalcis • †Reptaria • †Reptaria stolonifera • †Reteocrinus • †Reteporina • †Reteporina striata • †Retichonetes • †Reticulatisporites • †Reticulatisporites muricatus • †Retispira • †Retispira fascireticulatus – type locality for species • †Retispira tenuilineata • †Retispira waverliensis • †Retrorsirostra • †Retrorsirostra carleyi • †Rhachicrinus • †Rhachicrinus wrighti • †Rhachiopteris • †Rhapanocrinus • †Rhegmaphyllum • †Rhegmaphyllum daytonensis • †Rhinidictya • †Rhinocaris • †Rhinocaris ehlersi • †Rhipidomella • †Rhipidomella pecosi • †Rhipidomella penelope – or unidentified comparable form • †Rhipidomella trigona • †Rhipidomella vanuxemi • †Rhipidothyris • †Rhizocorallium'' • †Rhombodictyon • †Rhombopora • †Rhombopora lepidodendroides • †Rhombotrypa • †Rhombotrypa subquadrata • †Rhopolonaria • †Rhopolonaria venosa • †Rhynchopora • †Rhynchotrema • †Rhynchotrema denatum • †Rhynchotrema dentatum • †Rhynchotreta • †Rhytimya • †Rhytimya compressa • †Rhytimya faberi • †Rhytimya lunulata • †Rhytimya oehana • †Rhytimya radiata • †Richmondoceras • †Richmondoceras brevicameratum • †Rizoceras • †Ropalonaria • †Royalella • †Royalella quadrolirata – type locality for species • †Royalella swallowiana – type locality for species • †Ruedemannia • †Ruedemannia trilix – type locality for species • †Rugomena • †Rugomena vetusta • †Rugosochonetes • †Rusophycus'' • †Rusophycus biloba ==S==

• †Saccella • †Saccella parva • †Salpingostoma • †Salpingostoma richmondensis – tentative report • †Samaropsis • †Sanguinolites • †Sanguinolites cuneatus • †Sanguinolites hekitoensis – type locality for species • †Sauropleura'' – type locality for genus • †Sauropleura pectinata – type locality for species • †Schellwienella • †Schistoceras • †Schizambon – tentative report • †Schizoblatta – type locality for genus • †Schizoblatta alutacea – type locality for species • †Schizocrania • †Schizocrania filosa • †Schizodus • †Schizodus acuminatus – type locality for species • †Schizodus affinis • †Schizodus appressus • †Schizodus chesterensis – or unidentified comparable form • †Schizodus curtus • †Schizodus subcircularis • †Schizodus wheeleri • †Schizolopha • †Schizophoria • †Schizophoria ferronensis • †Schizophoria impressa • †Schlotheimophyllum • †Schlotheimophyllum benedicti • †Schlotheimophyllum patellatum • †Schuchertella • †Schuchertella interstriata • †Schuchertoceras • †Scolithos • †Scolithos laxata • †Sedgwickia – tentative report • †Semicoscinium • †Semipora – tentative report • †Semipora ehlersi • †Septopora • †Septopora biserialis • †Septopora robusta • †Serpulites • †Serpulospira • †Serpulospira diversiformis • †Sevillia • †Sevillia sevillensis • †Sevillia trinucleata • †Shansiella • †Shansiella beckwithana • †Shansiella carbonaria • †Shansiella insecta • †Shideleroceras • †Sigillaria'' • †Sigillaria brardii • †Sigillaria elegans • †Sigillaria ficoides • †Sigillaria lacoei • †Sigillaria laurenciana • †Sigillaria mamillaris • †Sigillaria orbicularis • †Sigillaria pileata – type locality for species • †Sigillaria rugosa • †Sigillariostrobus • †Silfonocrinus • †Silfonocrinus siluricus • †Silicaster • †Silicaster esseri • †Similodonta – tentative report • †Sinuites • †Sinuites cancellatus • †Sinuites granistriatus • †Sinuites subcompressa • Solemya'' • †Solemya radiata • †Solemya sharonensis – type locality for species • †Soleniscus • †Soleniscus aplatus – type locality for species • †Soleniscus klipparti • †Soleniscus primigenia • †Soleniscus primogenium • †Soleniscus regularis • †Soleniscus typicus • †Solenomorpha • †Solenomorpha lamborni • †Solisphaeridium • †Solisphaeridium astrum • †Solisphaeridium clavum • †Solisphaeridium folliculum • †Solisphaeridium rigispinosum • †Sowerbyella • †Sowerbyella rugosa • †Spatiopora • †Sphenolium • †Sphenophragmus • †Sphenophragmus nanus – or unidentified comparable form • †Sphenophyllum'' • †Sphenophyllum majus • †Sphenophyllum oblongifolium • †Sphenopteris • †Sphenopteris elegans – or unidentified comparable form • †Sphenopteris minutisecta • †Sphenosphaera • †Sphenosphaera centervillensis – type locality for species • †Sphenosphaera fiscellostriata – type locality for species • †Sphenosphaera opertus – type locality for species • †Sphenosphaera recurvus – type locality for species • †Sphenothallus • †Spiloblattina • †Spiloblattina variegata – type locality for species • †Spinocyrtia • †Spinocyrtia euryteines – report made of unidentified related form or using admittedly obsolete nomenclature • †Spinosporites • †Spinosporites exiguus • †Spinulicosta • †Spinulicosta spinulicosta • †Spinyplatyceras • †Spinyplatyceras dumosum • †Spirifer'' • †Spirifer opimus • †Spirifer pennatus • †Spiromphalus • †Spiromphalus pervius – type locality for species • Spiropteris • Spirorbis • †Spirorbis arkonensis • †Spirorbis planum • †Spiroscala • †Spiroscala solida • †Spongentactinella • †Spongentactinella veles • †Sporangites • †Sporangites huronensis • †Spyroceras • †Staufferoceras • †Stegocoelia • †Stegocoelia copei – or unidentified comparable form • †Stegops • †Stegops newberryi – type locality for species • †Stellinium • †Stellinium cristatum • †Stellinium inflatum • †Stellinium octoaster • †Stelodictyon • †Stereoaster • †Stereoaster squamosus • †Stereostylus • †Stereostylus amesensis • †Stereotoechus • †Stereotoechus typicus – or unidentified comparable form • †Stethacanthus'' • †Stethacanthus altonensis • †Stibarocrinus • †Stibarocrinus centervillensis • †Stictoporella • †Stictoporina • †Stictoporina granulifera • †Stigmatella • †Stigmatella catenulata • †Stigmatella crenulata • †Stigmatella dychei • Stomatopora • †Straparollus • †Straparollus hecale – or unidentified comparable form • †Straparollus rudis – or unidentified comparable form • †Strataster • †Strataster devonicus • †Streblochondria • †Streblopteria • †Streblopteria oklahomensis • †Streblotrypa • †Streblotrypa anomala • †Streblotrypa hamiltonensis • †Streptaster • †Streptaster vorticellatus • †Streptelasma • †Streptelasma divaricans • †Striatopora • †Striatopora flexuosa • †Striatopora intermittens • †Strobeus • †Strobeus brevis • †Strobeus immanis • †Strobeus intercalaris • †Strobeus paludinaeformis • †Stromatocerium • †Stromatocerium granulosum • †Stromatopora • †Strombodes • †Strombodes socialis • †Strophalosia • †Strophalosia truncata • †Stropheodonta • †Stropheodonta demissa • †Strophodonta • †Strophodonta demissa – report made of unidentified related form or using admittedly obsolete nomenclature • †Strophomena'' • †Strophomena concordensis • †Strophomena erratica • †Strophomena extenuata • †Strophomena maysvillensis • †Strophomena neglecta • †Strophomena nutans • †Strophomena planoconvexa • †Strophomena planumbona • †Strophomena sulcata • †Strophostylus • †Sturgeonospira – type locality for genus • †Sturgeonospira tortula – type locality for species • †Stygetoblatta – type locality for genus • †Stygetoblatta latipennis – type locality for species • †Styliolina • †Styliolina fissurella • †Stylonema • †Stylonema robusta • †Subulites • †Subulites planilateralis – type locality for species • †Sulcoretepora • †Sulcoretepora deissi • †Sulcoretepora incisurata • †Synhomalonotus • †Syntomopterus • †Syntomopterus richardsoni • †Syringopora'' – tentative report • †Syringopora reteformis • †Syringostroma • †Syringostroma cylindricum • †Syringostroma densum • †Syringostroma nodulatum • †Syringostroma pustulosum • †Syringothyris • †Syringothyris bedfordensis • †Syscioblatta • †Syscioblatta anomala – type locality for species • †Syscioblatta minor – type locality for species • †Syscioblatta misera – type locality for species • †Syscioblatta obscura – type locality for species • †Syscioblatta steubenvilleana – type locality for species • †Sysciophlebia • †Sysciophlebia acutipennis – type locality for species • †Sysciophlebia adumbrata – type locality for species • †Sysciophlebia affinis – type locality for species • †Sysciophlebia balteata • †Sysciophlebia benedicta – type locality for species • †Sysciophlebia hybrida – type locality for species • †Sysciophlebia nana – type locality for species • †Sysciophlebia obtusa – type locality for species • †Sysciophlebia picta – type locality for species • †Sysciophlebia rotundata – type locality for species • †Sysciophlebia schucherti – type locality for species • †Sysciophlebia scudderi – type locality for species • †Sysciophlebia variegata – type locality for species • †Sysciophlebia whitei – type locality for species ==T==

• †Taeniaster • †Taeniaster elegans • †Taeniopteris • †Taeniopteris lescuriana • †Taeniopteris newberriana • †Tamiobatis • †Tamiobatis vetustus • †Tanaocrinus • †Tasmanites • †Technophora • †Technophorus – type locality for genus • †Technophorus faberi – type locality for species • †Teichichnus • †Temnocheilus • †Temnocheilus forbesianus • †Tentaculites'' • †Tentaculites bellulus • †Tentaculites gracilistriatus • †Tetradium • †Tetranota • †Tetranota bidorsata • †Tetrentactinia • †Tetrentactinia barysphaera • †Tetrentactinia gracilispinosa • †Tetrentactinia quadrispinosa • †Tetrentactinia somphosphaera • †Tetrentactinia somphozona • †Tetrentactinia spongacea • †Tetrentactinia teuchestes • †Thamnoptychia • †Thamnoptychia alpenensis • †Thamnoptychia labyrinthica • †Thamnoptychia minuitissima • †Thamnoptychia projecta – tentative report • †Thamnoptychia silicensis • †Thymospora • †Thymospora obscura • †Thymospora pseudothiessenii • †Tirocrinus • †Tirocrinus trochos • †Tomoceras • †Tomoceras gilliana – or unidentified comparable form • †Torispora • †Torispora securis • †Tornacia • †Tornacia stela • †Tornoceras • †Tornoceras uniagnulare • †Tornoceras uniangulare • †Toryniferella • †Trachydomia • †Tremanotus • †Trematis • †Trematis millepunctata • †Trematis millepuntata • †Trematis reticularis • †Trematopora • †Trepospira • †Trepospira illinoisensis • †Treptoceras'' • †Treptoceras byrnesi • †Treptoceras cincinnatiensis • †Treptoceras duseri • †Treptoceras fosteri • †Triarthrus • †Triendoceras – tentative report • †Triendoceras davisi • †Trigonoglossa • †Trigonoglossa nebrascensis • †Trigrammaria • †Trilonche • †Trilonche cancellicula • †Trilonche prolata • †Trimerella • †Triquitrites • †Triquitrites additus • †Triquitrites bransonii • †Triquitrites crassus • †Triquitrites minutus • †Triquitrites sculptilis • †Triquitrites spinosus • †Triquitrites subspinosus – or unidentified comparable form • †Triquitrites tribullatus • †Trocholites • †Trochonema • †Trochonemopsis • †Trochonemopsis meekanum • †Troedssonoceras • †Tropidodiscus • †Tropidodiscus vesculilineatus – type locality for species • †Tropidoleptus • †Tropidoleptus carinatus • †Truncatiramus – now regarded as a jr. synonym of Erettopterus • †Truncatiramus perryensis • Trypetesa • †Trypetesa caveata • †Trypherocrinus • †Trypherocrinus brassfieldensis • †Tuberculatosporites • †Tuberculatosporites robustus • †Tuditanus'' – type locality for genus • †Tuditanus punctulatus – type locality for species • †Turbocrinus • †Turbocrinus paunctum • †Turbonopsis • †Turbonopsis shumardii • †Typanocrinus • †Typanocrinus strombos ==U==

• †Ulrichia • †Ulrichia nodosa • †Umbotropis • †Umbotropis filitexta – type locality for species • †Uncinisphaera • †Uncinisphaera lappa • †Unellium • †Unellium ampullium • †Unellium elongatum • †Unellium oscitans • †Unklesbayella – type locality for genus • †Unklesbayella geinitzi • †Urasterella'' • †Urasterella grandis ==V==