List of the Paleozoic life of Arkansas

• †Adnatoceras • †Adnatoceras alaskense • †Ahrensisporites • †Ahrensisporites guerickei • †Amphiscapha • †Amphiscapha intermedius • †Amphissites • †Amphissites rugosus • †Amplexizaphrentis • †Amplexizaphrentis maneri – type locality for species • †Amplexizaphretis • †Amplexizaphretis maneri – type locality for species • †Amplexus • †Ananaspis • †Anchicrinus • †Anchicrinus planulatus • †Ancillotoechia • †Ancillotoechia marginata • †Angyomphalus • †Angyomphalus desultoria – type locality for species • †Angyomphalus discus • †Anomphalomorpha – report made of unidentified related form or using admittedly obsolete nomenclature • †Anthracoceras • †Anthracoceras paucilobum • †Anthracomartus • †Anthracomartus trilobitus – type locality for species • †Anthracospirifer • †Antiquatonia • †Antirhynchonella • †Antirhynchonella thomasi • †Aphelaeceras • †Aphelaeceras arkansanum – type locality for species • †Aphralysia – tentative report • †Apiculatasporites • †Apiculatasporites variocorneus • †Apotocardium • †Apotocardium peculiare – type locality for species • †Apotocardium polymitarium – type locality for species • †Apotocardium snideri – tentative report • †Arcanoceras • †Arcanoceras furnishi – type locality for species • †Archaeocidaris • Archaeolithophyllum – tentative report • †Archimastax • †Archimastax americanus – type locality for species • †Archimedes'' • †Archimylacris • †Archimylacris venusta – type locality for species • †Arkacrinus • †Arkacrinus dubius • †Arkanites • †Arkanites relictus • †Arkoceras • †Arkoceras exiguum • †Asketomorpha – type locality for genus • †Asketomorpha grandis – type locality for species • †Asphaltina • †Astartella • †Astartella concentrica – or unidentified comparable form • †Athyris • †Atrypa • †Atrypina • †Atrypina erugata • †Aviculopecten'' • †Aviculopecten inspeciosus • †Aviculopecten jennyi • †Aviculopecten morrowensis • †Aviculopecten squamula • † Avonia • †Avonia honeycreekensis • †Axinolobus • †Axinolobus modulus – type locality for species ==B==

• †Bactrites • †Bactrites carbonarius • †Bactrites gaitherensis • †Bactrites redactus • †Bactrites smithianus • †Bactritimimus • †Bactritimimus girtyi – type locality for species • †Bactritimimus ulrichi – type locality for species • †Baiosoma • †Baiosoma cucullata – type locality for species • Bairdia • †Bairdia girtyi • †Barytichisma • †Barytichisma clubinei • †Barytichisma ozarkana • †Baschkirites • †Baschkirites librovitchi • †Beecheria • †Bellerophon • †Bellerophon welshi • †Bisatoceras • †Bisatoceras secundum • †Bistrialites • †Bistrialites bicostatus – type locality for species • †Boesites • †Boesites scotti • †Borestus • †Boucotides • †Boucotides barrandei • †Brachycycloceras • †Brachycycloceras washingtonense – type locality for species • †Brachymimulus • †Brachymimulus americanus • †Brachymimulus elongatus • †Brachythyris • †Bradyphyllum • †Bradyphyllum lesliense – type locality for species • †Branneroceras • †Branneroceras branneri • †Bridgeites • †Bridgeites planidorsalis – type locality for species • †Buttsia • †Buttsia drabensis • †Buxtonia ==C==

• †Cancelloceras • †Cancelloceras hunstvillense – type locality for species • †Cancelloceras huntsvillense – type locality for species • †Caneyella • †Caneyella peculiaris • †Caneyella percostata • †Caneyella wapanuckensis – or unidentified comparable form • †Caninostrotion • †Caninostrotion variabilis • †Carcharopsis • †Carcharopsis wortheni • †Cardiomorpha – tentative report • †Cardiomorpha inflata • †Caryocrinites • †Cavellina • †Cavusgnathus • †Centrotarphyceras • †Centrotarphyceras yellvillense • †Ceratopea • †Ceratopea unguis • †Cheilocephalus • †Cheilocephalus brachyops • †Cheirurus'' • †Cheirurus phollikodes – type locality for species • †Cheirurus prolixus – type locality for species • †Choctawites • †Choctawites choctawensis • †Chonetes • †Clathrospira • †Clathrospira virguncula • †Cleiothyridina • †Cliffia • †Cliffia lataegenae • †Cluthoceras • †Cluthoceras glicki – type locality for species • †Clytoceras • †Clytoceras capax • †Coelogasteroceras • †Coelogasteroceras gracile • †Comanchia • †Comanchia amplooculata • †Composita'' • †Compsonema • †Convolutispora • †Copiceras • †Copiceras erectum • †Cornuproetus • †Cornuproetus kyphora – type locality for species • †Cranaena • †Crassispora • †Crassispora kosankei • †Cravenoceras • †Cravenoceras lineolatum – type locality for species • †Criboconcha • †Cristatisporites • †Cristatisporites connexus • †Cristatisporites indignabundus • †Cromyocrinus • †Cromyocrinus grandis – type locality for species • †Crurithyris • †Crurithyris parva • †Ctenobactrites • †Ctenobactrites lesliensis – type locality for species • †Cupulocorona • †Cupulocorona gemmiformis • †Cupulocorona osgoodensis • †Cyclogranisporites • †Cycloplectoceras • †Cycloplectoceras funatum • †Cycloplectoceras miseri • †Cymoceras • †Cymoceras cracens • †Cymostrophia – report made of unidentified related form or using admittedly obsolete nomenclature • †Cypricardella • †Cypricardella subalata • †Cypricardinia – tentative report • †Cypricardinia fayettevillensis • †Cyrtina ==D==

• †Dalmanites – type locality for genus • †Dalmanites bassleri • †Dalmanites howelli • †Dalmanites ptyktorhion – type locality for species • †Decoroproetus • †Decoroproetus anaglyptus – type locality for species • †Decoroproetus corycoeus • †Deiphon'' • †Deiphon longifrons • †Dellea • †Dellea suada • †Delops • †Densosporites • †Densosporites annulatus • †Densosporites irregularis • †Densosporites sphaerotriangularis • †Densosporites triangularis • †Dentoceras • †Dentoceras belemnitiforme – type locality for species • †Desmoinesia • †Diaboloceras • †Diaboloceras neumeieri – type locality for species • †Diaboloceras varicostatum • †Diacalymene'' • †Diacalymene altirostris • †Diacamaropsis • †Diacamaropsis parva • †Diaphragmus • †Dicamaropsis • †Dicamaropsis parva • †Dicoelosia • †Dicoelosia bilobella • †Dielasma • †Dinocycloceras • †Dinocycloceras ballianum – or unidentified comparable form • †Dinocycloceras prolixum • †Diphuicrinus • †Diphuicrinus croneisi • †Dolerorthis – tentative report • †Dolerorthis nanella • †Dolorthoceras • †Dolorthoceras caneyanum – or unidentified comparable form • †Dolorthoceras incisum – type locality for species • †Dolorthoceras tenuifilosum – type locality for species ==E==

• †Echinaria • †Echinoconchus • †Economolopsis – type locality for genus • †Economolopsis gordoni – type locality for species • †Ectogrammysia – type locality for genus • †Ectogrammysia crassatis – type locality for species • †Edmondia • †Edmondia equilateralis • †Edmooroceras • †Edmooroceras plummeri • †Encrinurus'' • †Encrinurus egani • †Endolobus • †Endolobus clorensis • †Eoasianites • †Eoasianites smithwickensis • †Eophacops • †Eophacops fontana – type locality for species • †Eopteria • †Eopteria richardsoni • †Eospirifer • †Eospirifer acutolineatus • †Eowellerites • †Eowellerites discoidalis – type locality for species • †Eowellerites moorei – or unidentified comparable form • †Ephippioceras • †Ephippioceras ferratum • †Epistroboceras • †Epistroboceras lesliense – type locality for species • †Epistroboceras mangeri – type locality for species • †Epistroboceras pitkinense – type locality for species • †Eucalyptocrinites'' • †Euchondria • †Euconospira • †Euconospira desereti – or unidentified related form • †Euconospira disjuncta • †Euloxoceras • †Euloxoceras angustius – type locality for species • †Euloxoceras greenei • †Eumetria • †Eumorphoceras • †Eumorphoceras bisulcatum • †Eumorphoceras milleri – type locality for species • †Eumorphoceras ornatissimum – or unidentified comparable form • †Euomphalus'' • †Euomphalus konobasis – type locality for species • †Euomphalus variabilis – type locality for species • †Eupachycrinus • †Eupachycrinus magister – or unidentified comparable form • †Euphemites • †Euphemites chesterensis – type locality for species • †Euphemites whirligigi – type locality for species ==F==

• †Fayettevillea • †Fayettevillea planorbis – type locality for species • †Florinites • †Florinites similis • †Florinites volans ==G==

• †Garwoodia – tentative report • †Gastrioceras • †Gastrioceras adaense • †Gastrioceras fittsi • †Gastrioceras formosum – type locality for species • (G) Gastrochaenolites'' • †Gastrochaenolites anauchen • †Gattendorfia • †Geisina – tentative report • †Geisina retiferiformis • †Girtyoceras • †Girtyoceras welleri – type locality for species • †Girtyspira • †Girtyspira microspirula – type locality for species • †Girvanella • †Glabrocingulum • †Glabrocingulum binodosum • †Glabrocingulum coronulum – type locality for species • †Glabrocingulum parasolum – type locality for species • †Glabrocingulum parvanodum – type locality for species • †Glabrocingulum quadrigatum • †Glaphyrites • †Glaphyrites depressus • †Glaphyrites fayettevillae – type locality for species • †Glaphyrites morrowensis • †Globozyga • †Globozyga mediocris – type locality for species • †Glyphiolobus • †Glyptambon'' – type locality for genus • †Glyptambon verrucosus • †Glyptopleura • †Glyptopleura angulata • †Glyptopleura inopinata • †Gnathodus • †Gnathodus texanus • †Goniatites • †Goniatites crenistria – or unidentified related form • †Goniatites granosus • †Goniatites multiliratus • †Gordonites • †Gordonites filifer • †Gordonites matheri • †Granulatisporites • †Granulatisporites adnatoides • †Graphiadactyllis • †Graphiadactyllis arkansana • †Graphiadactyllis fayettevillensis ==H==

• †Haplistion • †Haplistion sphaericum • †Harpidella • †Harpidella butorus – type locality for species • †Harpidella spinulocervix • †Healdia • †Hematites • †Hematites barbarae • †Holocystites • †Holocystites alternatus • †Homoceratoides • †Homoceratoides cracens • †Homoeospirella • †Homoeospirella costatula • †Homoeospirella pygmaea • †Hormotoma • †Hormotoma anna • †Hormotoma artemesia – type locality for species • †Housia • †Housia vacuna • †Howellella • †Howellella splendens • †Hudsonoceras • †Hudsonoceras moorei • †Hustedia • †Hydreionocrinus • †Hypotetragona – tentative report ==I==

• †Imitoceras • †Imitoceras sinuatum – type locality for species • †Imoella – type locality for genus • †Imoella obscura – type locality for species • †Imogloba • †Imogloba gandyensis • †Imonautilus – type locality for genus • †Imonautilus meeki – type locality for species • †Incisurella • †Incisurella prima • †Inflatia • †Inflatia clydensis • †Irvingella • †Irvingella major ==J==

• †Janthimorpha – report made of unidentified related form or using admittedly obsolete nomenclature • †Jasperoceras • †Jasperoceras costatum ==K==

• †Kaskia • †Kaskia chesterensis • †Kazakhstania – tentative report • †Kindbladia • †Kindbladia wichitaensis • †Kinkaidia • †Kinkaidia trigonalis • †Kirkbya • †Kirkbya reflexa • †Kirkbyella • †Kirkbyella quadrata • †Knightoceras • †Knightoceras oxylobatum – type locality for species • †Knightoceras patulum • †Knoxisporites • †Knoxisporites triradiatus • †Kozlowskiellina • †Kozlowskiellina vaningeni • †Krotovia ==L==

• †Laevigatosporites • †Laevigatosporites desmoinesensis • †Laevigatosporites vulgaris • †Lasanocrinus • †Lasanocrinus strigosus • †Leangella • †Leangella dissiticostella • †Leonardophyllum • †Leonardophyllum arkansanum • †Lepdioproetus • †Lepdioproetus xeo – type locality for species • †Leptaena • †Leptagonia • †Leptocyrtoceras • †Leptocyrtoceras curvatum • †Leptocyrtoceras powellense • †Leptodesma • †Limipecten • †Lingula • †Linoproductus • †Liroceras – tentative report • †Lissatrypa • †Lissatrypa clairensis • †Lissostrophia • †Lophamplexus – tentative report • †Lophophyllidium • †Lophophyllidium imoense – type locality for species • †Lophotriletes • †Lophotriletes microsaetosus • †Lusitanites • †Lusitanites subcircularis • †Lycospora • †Lycospora micropapillata • †Lycospora pellucida • †Lygdozoon – type locality for genus • †Lygdozoon anoplos – type locality for species • †Lygdozoon arkansanum • †Lygdozoon collatum – type locality for species • †Lysocystites – or unidentified related form ==M==

• †Macropotamorhynchus • †Macropotamorhynchus chouteauensis • †Macropotamorhynchus tuta • †Macrostylocrinus • †Magnumbonella • †Mammoides • †Mariceras • †Marmolatella • †Marmolatella imoensis – type locality for species • †Marmolatella macgordoni – type locality for species • †Meekospira • †Meekospira minuta • †Megaglossoceras • †Megaglossoceras glicki – type locality for species • †Megapronorites • †Megapronorites baconi • †Meristina • †Meristina clairensis • †Metacoceras'' • †Metacromyocrinus • †Metacromyocrinus gillumi • †Metadimorphoceras • †Metadimorphoceras subdivisum • †Metutharocrinus • †Metutharocrinus cockei – type locality for species • †Michelinia • †Michelinia macerimuris – type locality for species • †Michelinia meekana • †Michelinia tenuicula • †Michelinoceras • †Michelinoceras wapanuckense • †Microcheilinella – tentative report • †Mitorthoceras • †Mitorthoceras crebriliratum • †Mitorthoceras girtyi – type locality for species • †Mitorthoceras perfilosum • †Mitorthoceras yellvillense – type locality for species • †Monoceratina • †Mooreoceras • †Mooreoceras wedingtonianum – type locality for species • †Mourlonia • †Mourlonia lativittata • †Muensteroceras • †Muensteroceras arkansanum – type locality for species • †Muensteroceras collinsoni – type locality for species • †Muensteroceras pisiforme – type locality for species • †Multithecopora • †Myalina • †Myalina parallela – or unidentified comparable form ==N==

• †Naiadites – tentative report • †Naticopsis'' • †Naticopsis clinovata – or unidentified comparable form • †Naticopsis genevievensis • †Neochonetes • †Neoglyphioceras • †Neoglyphioceras caneyanum • †Neoglyphioceras crebriliratum • †Nostocites • †Nucleospira • †Nucleospira raritas • †Nuculavus • †Nuculavus okawensis • †Nuculopsis • †Nuculopsis shumardana ==O==

• †Ogygoceras • †Ogygoceras gracile • †Onychotreta • †Onychotreta lenta • †Onychotreta mesleri • †Onychotreta miseri • †Onychotreta multiplicata • †Onychotreta plicata • †Orbiculoidea • †Orospira • †Orospira elegantula • †Orthobairdia • †Orthobairdia cestriensis • †Orthonychia • †Orthonychia compressum • †Orthonychia ungula • †Orthostrophella • †Orthostrophella clairensis • †Orthotetes • †Ortonella – tentative report • †Ortonella kershopensis • †Ovatia • †Oxoplecia • †Oxoplecia infrequens • †Ozarcus – type locality for genus • †Ozarcus mapesae – type locality for species ==P==

• †Pachylyroceras • †Pachylyroceras cloudi • †Pachylyroceras newsomi • †Paladin • †Paladin mucronatus • †Palaeacis • †Palaeacis carinata • †Palaeocapulus • †Palaeocapulus undata • †Palaeoneilo • †Palaeoneilo sera • †Paleoconus • †Paleoconus bakeri – type locality for species • †Paleyoldia • †Paleyoldia angustia – type locality for species • †Paleyoldia bruta – type locality for species • †Palmerocrinus • †Palmerocrinus kesslerensis – type locality for species • †Paracravenoceras • †Paracravenoceras ozarkense – type locality for species • †Paracromyocrinus • †Paracromyocrinus oklahomensis • †Paradimorphoceras • †Paralegoceras • †Paralegoceras iowense • †Paralegoceras texanum • †Parallelodon • †Parallelodon cancellosus – or unidentified comparable form • †Paramphicrinus • †Paramphicrinus magnus – type locality for species • †Paraparchites – tentative report • †Paraparchites cyclopeus • †Parastrophinella • †Parastrophinella lepida • †Parvaxon • †Parvaxon minutum • †Patellilabia • †Patellilabia laevigata • †Patellilabia rhombadella – type locality for species • †Patellilabia sulcata – type locality for species • †Pentremites'' • †Pericyclus • †Perigrammoceras • †Perimestocrinus • †Perimestocrinus teneris • †Peripetoceras • †Peripetoceras ozarkense – type locality for species • †Permophorus • †Phaneroceras • †Phaneroceras compressum • †Phaneroceras kesslerense – type locality for species • †Pharkidonotus • †Phestia • †Phestia corrugata – type locality for species • †Phestia obtusa – type locality for species • †Phestia wortheni – type locality for species • †Phricodothyris • †Pilosisporites • †Pilosisporites williamsii • †Pionoceras • †Pionoceras smithvillense • †Placotriplesia • †Placotriplesia juvenis • †Placotriplesia praecipta • †Platyceras'' • †Platyceras latum • †Platyceras oxynotum – type locality for species • †Plectatrypa • †Plectatrypa arctoimbricata • †Plectodonta – tentative report • †Plicochonetes • †Plicocyrtia • †Plicocyrtia arkansana • †Polidevcia • †Polidevcia stevensiana • †Posidonia • †Posidonia nasuta • †Productina • †Productina sampsoni • †Productus • †Proetus'' • †Proetus vaningeni • †Prolecanites • †Prolecanites lyoni – or unidentified comparable form • †Proshumardites • †Proshumardites morrowanus • †Prospira • †Prospira latior • †Prothyris • †Prothyris crista – type locality for species • †Prothyris soleniformis – or unidentified comparable form • †Protocycloceras • †Protocycloceras arkansaense • †Protocycloceras smithvillense • †Pseudagnostus • †Pseudagnostus communis • †Pseudokingstonia • †Pseudokingstonia exotica • †Pseudopronorites • †Pseudopronorites arkansiensis • †Pseudopronorites quinni • †Pseudorthoceras • †Pseudorthoceras knoxense • †Pseudorthoceras stonense – type locality for species • †Pseudozygopleura • †Pterocephalia • †Pterocephalia sanctisabae • †Ptychomphalina • †Ptychomphalina magna – type locality for species • †Punctospirifer • †Pycnoceras • †Pycnoceras clausum • †Pygmaeoceras • †Pygmaeoceras solidum ==Q==

• †Quinnites • †Quinnites henbesti • †Quinnites textum ==R==

• †Radnoria • †Ramosites • †Raphiophorus • †Raphiophorus niagarensis • †Rayonnoceras • †Rayonnoceras eccentricum – type locality for species • †Rayonnoceras fayettevillense • †Rayonnoceras irregulare – or unidentified comparable form • †Rayonnoceras nobile – or unidentified comparable form • †Rayonnoceras protentum – type locality for species • †Rayonnoceras solidiforme • †Rayonnoceras vaughanianum • †Rectangulina • †Resserella • †Reticulariina • †Reticuloceras • †Reticuloceras tiro • †Reticuloceras wainwright • †Reticuloceras wainwrighti • †Reticycloceras • †Reticycloceras croneisi – type locality for species • †Reticycloceras girtyi – type locality for species • †Reticycloceras peytonense – type locality for species • †Reticycloceras sequoyahense • †Retispira • †Retispira cincta • †Retispira ordinata – or unidentified related form • †Retispira yochelsoni – type locality for species • †Retites • †Retites semiretia • †Reviya • †Reviya planus – or unidentified related form • †Rhipidomella • †Rhynchopora • †Rhytiophora • †Rhytiophora blairi • †Richardsonites • †Richardsonites richardsonianum • †Richardsonites richardsonianus • †Roundyella • †Roundyella simplex ==S==

• †Sandia • †Sanguinolites • †Sanguinolites simulans – tentative report • †Sansabella • †Sansabella fayettevillensis • †Sansabella reticulata • †Savitrisporites • †Savitrisporites nux • †Schartymites • †Schartymites paynei • †Schellwienella • †Schizodus • †Schizodus chesterensis • †Schizophoria • †Schuchertella • †Schulzospora • †Schulzospora rara • †Schumardella • †Schumardella obsolecens • †Sedenticellula • †Sedgwickia • †Seminolites • †Septatrypa • †Septatrypa havliceki • †Septimyalina • †Septimyalina perattenuata – or unidentified comparable form • †Serenida • †Serenida seminalis • †Shaleria • †Solenochilus • †Solenochilus floweri – type locality for species • †Solenochilus peculiare – or unidentified comparable form • †Solenomorpha • †Solenomorpha nitida • †Spathelopsis – type locality for genus • †Spathelopsis browni – type locality for species • †Sphaerexochus'' • †Sphaerexochus glaber – type locality for species • †Sphenotus • †Sphenotus branneri • †Sphenotus dubius • †Sphenotus meslerianus • †Sphenotus pisinnus – type locality for species • †Sphenotus washingtonensis • †Spirifer'' • †Spiriferellina • †Staurocephalus • †Staurocephalus lagena – type locality for species • †Staurocephalus oarion – type locality for species • †Stearoceras • †Stearoceras gibbosum – or unidentified related form • †Stearoceras smithi – type locality for species • †Stenoglaphyrites • †Stenoglaphyrites involutus – type locality for species • †Stenoglaphyrites miseri – type locality for species • †Stenopronorites • †Sthenarocalymene • †Sthenarocalymene scutula – type locality for species • rhizome system †Stigmaria'' • †Stigmaria wedingtonensis • †Stioderma • †Stioderma hadra – type locality for species • †Streptis • †Streptis glomerata • †Streptorhynchus • †Strobeus • †Stroboceras • †Stroboceras gordoni – type locality for species • †Stroboceras sulcatum – or unidentified comparable form • †Sudeticeras • †Sulcella • †Sulcogirtyoceras • †Sulcogirtyoceras jasperense – type locality for species • †Sulcogirtyoceras limatum • †Sutherlandia • †Syngastrioceras • †Syngastrioceras globosum • †Syngastrioceras oblatum • †Syngastrioceras scotti • †Syntrophopsis • †Syntrophopsis grandis – type locality for species ==T==

• †Tectamichelina – type locality for genus • †Tectamichelina mangeri – type locality for species • †Teiichispira • †Teiichispira odenvillensis • †Tesuquea • †Tetracamera • †Tetratylis – tentative report • †Tetratylus – tentative report • †Torynifer • †Trepspira • †Trepspira tentative report type locality for species – informal • †Triboloceras – tentative report • †Tripteroceroides – tentative report • Trypanites'' • †Tylonautilus • †Tylonautilus gratiosus ==U==