''Inversoceras'' is a
genus of cephalopods in the order
Oncocerida
The Oncocerida comprise a diverse group of generally small nautiloid cephalopods known from the Middle Ordovician to the Mississippian (early Carboniferous; one possible member is known from the Early Permian), in which the connecting rings are t ...
and the family
Trimeroceratidae. These mollusks were fast-moving
nektobenthic carnivores. They lived in the
Silurian
The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozo ...
period, from the
Lower Wenlock age (428.2 ± 1.5 to 422.9 ± 2.8 mya) to the Ludlow age (422.9 ± 1.5 to 418.7 ± 2.8 mya).
Distribution
Silurian of Sweden, United States (Wisconsin).
Species
* ''Inversoceras falciformis'' (Barrande 1865)
* ''Inversoceras percurvatum'' Foerste 1926
** ''Inversoceras perversum eoperversum'' Stridsberg 1988
** ''Inversoceras perversum falciformis'' (Barrande 1865)
** ''Inversoceras perversum perversum'' (Barrande 1865)
See also
*
List of nautiloids
This list of nautiloids is a comprehensive listing of all genera that have ever been included in the subclass Nautiloidea, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered in ...
References
BiolibGlobal NamesPaleobiology Database
*Sepkoski, Jac
Sepkoski's Online Genus Database
*Sven Stridsber
Evolution Within the Silurian Cephalopod Genus Inversoceras
Prehistoric nautiloid genera
{{silurian-animal-stub