''Arctogymnites'' is a genus of

ammonoid Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...

cephalopods from the middle Triassic included in the

ceratitid Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the phylloceratids which gave rise to the great diversity of post Triassic ammoni ...

subfamily Beyrichitinae. Related genera include '' Beyrichites'', ''

Frechites ''Frechites'' is an early Triassic ammonite, a kind of cephalopod with an external shell, included in the ceratitid family Beyrichitidae. Taxonomic revision J.P. Smith, 1932, put ''Frechites'' in the Ceratididae where it remained included in th ...

'', '' Gymnotoceras'', and '' Salterites'' The Treatise Part L, 1957 separates the beyrichitids (Beyrichidae) as an independent family in the

Ceratitaceae Ceratitoidea, formerly Ceratitaceae, is an ammonite superfamily in order Ceratitida characterized in general by highly ornamented or tuberculate shells with ceratitic sutures that may become goniatitic or ammonitic in some offshoots. (Arkell ' ...

, separate from the Ceratitidae. Later (Tozer 1981) they were incorporated into the Ceratitidae as a subfamily.

References

* Arkell ''et al''. Mesozoic Ammonoidea;

Treatise on Invertebrate Paleontology The ''Treatise on Invertebrate Paleontology'' (or ''TIP'') published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and co ...

, Part L, Ammonoidea. Geol Soc of America and Univ Kansas press. R. C. Moore (Ed) -- Ceratitaceae, pp L147 -L158
Classification of E. T. Tozer 1981
Ceratitidae Ceratitida genera Middle Triassic ammonites Fossils of Russia {{Ceratitida-stub