†family Cyrthoceratidae Chapman 1857 (mollusk)
Cephalopoda - Oncocerida - Cyrthoceratidae
Parent taxon: Cyrthocerataceae according to E. I. Miagkova 1967
Sister taxa: Maelonoceratidae, Oocerinidae
Subtaxa: Oyogiroceras Pachiceras
Ecology: fast-moving nektobenthic carnivore
Distribution:
• Silurian of the Russian Federation (2 collections)
Total: 2 collections including 3 occurrences