''Quasintoceras'' is a genus of goniatitid ammonites from the Lower

Carboniferous The Carboniferous ( ) is a Geologic time scale, geologic period and System (stratigraphy), system of the Paleozoic era (geology), era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the ...

Visean included in the

Intoceratidae Intoceratidae is one of nine families of the Pericycloidea superfamily. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish Cuttlefish, or cuttles, are Marine (o ...

of the Pericyclaceae, now Pericycloidea.''Quasintoceras'' in Gonait on Line
/ref> ''

Aquilonites ''Aquilonites'' is a pericyclacean goniatitid belonging to the family Intoceratidae, suborder Goniatitina, that lived during the very early Carboniferous of what is now Russia Russia, or the Russian Federation, is a country spanning Eas ...

'', '' Intoceras'', and '' Oxintoceras'' are among related genera.

References

Goniatitida genera Pericyclaceae Mississippian ammonites {{Goniatitida-stub