Jewett Sand Formation

Cartilaginous fishes Sharks • †Alopias exigua • †Alopias latidens • †Megalolamna paradoxodon • †Negaprion elongata' • †Allodelphis pratti • †Amphidelphis bakersfieldensis • †Anchitherium sp. • †Argyrocetus joaquinensis • †Desmathyus • †Enaliarctidae indet. • †Enaliarctos mealsi • †Macrodelphinus kelloggi • †Miodelphis californicus • Otariidae indet. • Phocidae indet. • Pinnipedia indet. • †Pinnarctidion bishopi • †Squalodontidae indet. ==Invertebrates==

Bivalves Pinna. • Aequipecten andersoni • Arca montareyanna • Chione temblorensis • Clementia pertenuis • Crassostrea titan • Crenomytilus mathewsoni • Cytheria matthewsoni • Dosinia conradi • Dosinia whitneyi • Glycymeris septentrionalis • Homomya sp. • Mactromeris albaria • Mytilus sp. • Nodipecten estrellanus • Pecten bowersi • Pecten magnolia • Pecten nevadaensis • Pecten perrini • Pecten sespeensis • Pectunculus branneri • Phacoides actulineatus • Pinna alamedaensis • Pycnodonte eldridgei • Solen sp. • Tellina ocoyana • Tellina sp. • Trachycardium vaquerosensis Gastropods of the shell of this modern member of the genus Epitonium has raised ribs that are known as costae. Costae are an almost universal feature in shells of Epitonium species. • Agasoma gravidum • Agasoma kerrianum • Conus oweni • Crepidula princeps • Epitonium rugiferum • Natica lewisi • Neverita callosa • Purpura lima Scaphopods • Dentalium sp. ==References==