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Ammonoidea of Colorado
Lindsay Walker
Species Count: 35
Acanthoceratidae
Euomphaloceras septemseriatum
Kamerunoceras puebloense
Mammites nodosoides
Metoicoceras geslinianum
Neocardioceras juddii
Watinoceras coloradoense
Baculitidae
Baculites anceps
Baculites asperiformis
Baculites compressus
Baculites ovatus
Baculites undatus
Baculites undulatus
Baculites yokoyamai
Sciponoceras gracile
Collignoniceratidae
Prionocyclus germari
Prionocyclus hyatti
Prionocyclus macombi
Prionocyclus novimexicanus
Prionocyclus quadratus
Prionocyclus wyomingensis
Diplomoceratidae
Oxybeloceras crassum
Oxybeloceras mortoni
Muniericeratidae
Tragodesmoceras bassi
Nostoceratidae
Didymoceras stevensoni
Didymoceras tricostatus
Exiteloceras jenneyi
Placenticeratidae
Placenticeras whitfieldi
Scaphitidae
Clioscaphites vermiformis
Discoscaphites conradi
Jeletzkytes nodosus
Scaphites depressus
Scaphites nigricollensis
Scaphites ventricosus
Scaphites whitfieldi
Vascoceratidae
Vascoceras birchbyi