''Arctohungarites'' is a genus of Triassic

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) ...

s now placed 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 ...

family Danubitidae, but previously included in the Hungeritidae. The shell of ''Arctohungerites'' is subdiscoidal, involute, with a rounded venter, weak sigmoidal folds on the body chamber and a distinct ventral keel on the distal end of the chambered portion. The suture is ceratitic. ''Arctohungerites'' was found in Middle Triassic ( Anisian) sediments in northern Siberia

References

* Arkell ''et al''. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geol Soc of America and Univ Kansas press. R. C. Moore (Ed)
Classification of E. T. Tozer 1981
Ceratitida genera Middle Triassic ammonites Fossils of Russia Anisian life {{Ceratitida-stub