Taxa Count: 346
ACANTHOCERATIDAE
ANATINELLIDAE
ANOMIIDAE
APORRHAIDAE
BACULITIDAE
BRACHYCYTHERIDAE
CARDIIDAE
COLLIGNONICERATIDAE
COLUBRARIIDAE
CORBULIDAE
CRASSATELLIDAE
CUCULLAEIDAE
CYPRIDEIDAE
CYRENIDAE
CYRENOIDIDAE
DENTALIIDAE
DIPLOMOCERATIDAE
ENGONOCERATIDAE
FASCIOLARIIDAE
GLOSSIDAE
GRYPHAEIDAE
HEMISINIDAE
HETEROCERATIDAE
HOPLITIDAE
INOCERAMIDAE
LUCINIDAE
LYMNAEIDAE
MACTRIDAE
NATICIDAE
NAUTILIDAE
NERITIDAE
NOSTOCERATIDAE
NUCULANIDAE
NUCULIDAE
OSTREIDAE
PECTINIDAE
PINNIDAE
PLACENTICERATIDAE
PLEUROCERIDAE
POROMYIDAE
PTERIIDAE
ROSTELLARIIDAE
SCAPHITIDAE
SERPULIDAE
SOLENIDAE
SPHAERIIDAE
TELLINIDAE
TURRILITIDAE
TURRITELLIDAE
UNIONIDAE
VENERIDAE
VENIELLIDAE
VIVIPARIDAE
Family Not Defined
Odontobasis ventricosa
Inoceramus barabini
Helicoceras mortoni
Ostrea congesta
Corbula engelmanni
Corbulomya tauschi
Viviparus conesi
Inoceramus labiatus
Corbicula pyriformis
Corbula pyriformis
Modiola pealei
Ostrea soleniscus
Ostrea coalvillensis
Tellina equilateralis
Anisomyon patelliformis
Gyrodes abyssina
Margaritella flexistriata
Lunatia subcrassa
Gryphaea corrugata
Gyrodes conradi
Xenophora simpsoni
Rostellaria ambigua
Fusus shumardi
Corbula nematophora
Inoceramus flaccidus
Inoceramus fragilis
Prionotropis laevianus
Inoceramus sagensis
Scaphites nicolleti
Ostrea sannionis
Liopistha meeki
Turritella whitei
Gyrodes depressa
Cucullaea nebrascensis
Crenella elegantula
Thetis circularis
Pteria nebrascana
Syncyclonema rigida
Yoldia evansi
Yoldia scitula
Fasciolaria culbertsoni
Cinulia concinna
Pteria linguiformis
Margarites nebrascensis
Anchura nebrascensis
Amauropsis paludinaeformis
Haminea speciosa
Lunatia obliquata
Heteroceras tortum
Scaphites nodosus quadrangularis
Heteroceras nebrascense
Gervillia subtortuosa
Cucullaea shumardi
Anomia rectiformis
Modiolus meeki
Haminea nebrascensis
Exogyra columbella
Pteria parkenssis
Isobuthus oblonga
Ostrea patina
Ostrea glabra wyomingensis
Ostrea glabra insecuris
Corbula subtrigonalis
Ostrea glabra arcuatilis
Corbicula subtrigonalis
Anomia micronema
Viviparus plicapressa
Viviparus thompsoni
Melania wyomingensis
Neritina volvulineata
Unio conesi
Corbula durkeei
Lioplax endlichi
Cardium pauperculum
Liopistha elongata
Nemodon
Modiola laticostata
Melania insculpta
Geloina securis
Modiola multilinigera
Barbatia micronema
Anatina lineata
Exogyra suborbiculata
Prionotropis woolgari
Mortoniceras shoshonensis
Belemnites gracilis
Isognomon wyomingensis
Nautilus elegans
Pholadomya papyracea
Inoceramus convexus
Pinna lakesii
Liopistha montanensis
Serpula markmani
Rostellaria gracilis
Cinulia
Liopistha concentrica
Serpula intrica
Pharella pealei
Crassatellites excavata
Gryphaea newberryi
Aporrhais prolabiata
Pinna petrina
Inoceramus vanuxemi
Cardium trite
Corbula perundata
Yoldia bisulcata
Protocardia rara
Veniella humilis
Callista deweyi
Protocardia subquadrata
Anchura americana
Glycymeris holmesiana
Glycymeris wyomingensis
Crassatellites n.
Ostrea lugubris
Inoceramus altus
Neaera ventricosa
Metoicoceras swallowi
Placunopsis hilliardensis
Serpula tenuicarinata
Anomia concentrica
Trigonia obliqua
Siliqua huerfanensis
Mactra huerfanensis
Scaphites warreni
Callista orbiculata
Ostrea anomoides
Mactra emmonsi
Pyropsis coloradoensis
Pholadomya subventricosa
Callista owenana
Inoceramus fibrosus
Pachymya herseyi
Anisomyon borealis
Serpula plana
Scaphites conradi
Sphaeriola cordata
Tapes cyprimeniformis
Trigonia conrad
Gryphaea navia
Cyprimeria texana
Cucullaea terminalis
Ostrea falcata
Nucula planimarginata
Anisomyon sexsulcatus
Lunatia dakotensis
Eutrephoceras montanensis
Platylenticeras catenulata
Pachymya aurandi
Gryphaea vesicularis
Sphaeriola endotrachys
Haminea occidentalis
Scaphites cheyennensis
Scaphites mandanensis
Turris minor
Martesia cuneata
Metacypris postnodosa
Cypridea compta
Cypridea wyomingensis
Cypridea diminuta
Bisulococypris persulcata
Cypris purbeckensis
Dicloeopella borealis
Codonella bojiga
Ammobaculites subcretaceus
Haplophragmoides collyra
Gaudryina bentonensis
Trochammina rutherfordi
Trochammina rainwateri
Verneuilinoides perplexus
Marginulinopsis amplaspira
Frondicularia imbricata
Nodosaria bighornensis
Lagena sulcata
Palmula pilulata
Dentalina summitensis
Epistomina charlottae
Ramulina aculeata
Cassidella tegulata
Nonionella austinana
Globulina lacrima
Rugoglobigerina aprica
Hedbergella delrioensis
Gavelinella awunensis
Gavelinella tumida
Dictyomitra multicostata
Foraminifera
Cytherella unilacuna
Cypridea skeeteri
Haplophragmoides gilberti
Ammobaculoides plummerae
Trochammina gatesensis
Verneuilinoides hectori
Ammobaculites junceus
Trochammina wetteri
Spiroplectammina ammovitrea
Miliammina manitobensis
Hedbergella graysonensis
Gryphaea
Sarcodina
Coscinophragma codyensis
Pseudobolivina rollaensis
Spiroplectammina semicomplanata
Dorothia smokyensis
Ammobaculoides macellus
Haplophragmoides howardense
Haplophragmoides rota
Trochamminoides
Trochammina diagonis
Haplophragmoides kirki
Lenticulina isidis
Lenticulina sublaevis
Lenticulina kansasensis
Nodosaria
Eouvigerina aculeata
Pleurostomella watersi
Tappanina costifera
Neobulimina irregularis
Neobulimina albertensis
Praebulimina reussi
Valvulineria plummerae
Globorotalites subconicus
Valvulineria infrequens
Gavelinella kansasensis
Gyroidinoides nitidus
Bifarina hispidula
Hedbergella
Heterohelix globulosa
Heterohelix pulchra
Globigerinelloides asperus
Hastigerinoides subdigitata
Globigerinelloides caseyi
Marginotruncana marginata
Archaeoglobigerina cretacea
Cythereis niobrarensis
Baculites eliasi
Teuthidida
Tusoteuthis
Uintacrinus
Collignoniceras woolgari
Tusoteuthis longa
Carbulamella gregaria
Araucaria
Pachymelania cleburni
Squama spissa