Psiloceras (Caloceras) johnstoni
Lower Jurassic (Hettangian)
Doniford Bay, Watchet
Sommerset, United Kingdom

Psiloceras planorbis
Blue Lias Formation
Lower Jurassic (Hettangian)
Doniford Bay, Watchet
Sommerset, United Kingdom

Cleoniceras besairiei
Lower Cretaceous (Albian)
Mahajanga Basin
Madagascar

Cleoniceras besairiei
Lower Cretaceous (Albian)
Mahajanga Basin
Madagascar

Cleoniceras besairiei
Lower Cretaceous (Albian)
Mahajanga Basin
Madagascar

Deshayesites sp.
Lower Cretaceous
Volga River, Saratov Region
Russia

Eopachydiscus marcianus
Duck Creek Fm. (Lower Cretaceous - Albian)
Pecos County, Texas

Manuaniceras elaboratum
Goodland Limestone
Lower Cretaceous (Albian)
Denton County, Texas

Schloenbachia trinodosa
Duck Creek Fm. (Lower Cretaceous - Albian)
Pecos County, Texas

Schloenbachia trinodosa
Duck Creek Fm. (Lower Cretaceous - Albian)
Pecos County, Texas

Schloenbachia trinodosa
Duck Creek Fm. (Lower Cretaceous - Albian)
Pecos County, Texas

Schloenbachia trinodosa
Duck Creek Fm. (Lower Cretaceous - Albian)
Pecos County, Texas

Idiohamites fremonti
Duck Creek Fm. (Lower Cretaceous Albian)
Pecos County, Texas

Mariella (Plesioturrilites) sp.
Main Street Limestone
Lower Cretaceous (Albian)
Tarrant County, Texas

Hoploscaphites nicolleti
Fox Hills Formation UNAZ Trail City Mbr.
Upper Cretaceous (Maastrichtian)
Dewey County, South Dakota

Hoploscaphites nodosus
Pierre Formation
Upper Cretaceous (Campanian)
Pennington County, South Dakota

Hoploscaphites plenus
Bear Paw Formation
Upper Cretaceous (Maastrichtian)
Dawson County, Montana

Hoploscaphites brevis with Baculites compressus
Pierre Formation
Upper Cretaceous (Campanian)
Pennington County, South Dakota

Hoploscaphites nodosus with Baculites compressus
Pierre Formation
Upper Cretaceous (Campanian)
Pennington County, South Dakota

Jeletzkytes spedeni
Fox Hills Formation POAZ Trail City Mbr.
Upper Cretaceous (Maastrichtian)
Corson County, South Dakota

Jeletzkytes nebracensis
Fox Hills Formation Timber Lake Mbr.
Upper Cretaceous (Maastrichtian)
Dewey County, South Dakota

Jeletzkytes nebracensis
Fox Hills Formation POAZ Trail City Mbr
Upper Cretaceous (Maastrichtian)
Corson County, South Dakota

Menuites portlocki complexus
Pierre Formation
Upper Cretaceous (Campanian)
Lyman County, South Dakota

Placenticeras meeki
Pierre Formation
Upper Cretaceous (Campanian)
Meade County, South Dakota

Placenticeras intercalare
Pierre Formation
Upper Cretaceous (Campanian)
Meade County, South Dakota

Placenticeras meeki
Pierre Formation
Upper Cretaceous (Campanian)
Meade County, South Dakota

Sphenodiscus lenticularis
Fox Hills Formation (Timber Lake Mbr.)
Upper Cretaceous (Maastrichtian)
Dewey County, South Dakota