Kingdom Animalia Class Cephalopoda Order Tarphycerida Rank Genus | Phylum Mollusca Superorder Nautilitoidea Family Barrandeoceratidae | |
The genus Savageoceras is a barrandeoceratid first known from the Middle Silurian of Illinois consisting of rapidly enlarging, depressed cyrtocones with a trapazoidal section; ventral side wider and flatter than dorsal; sides converging on dorsum. Sutures have slight lateral and ventral lobes and ventrolateral saddles. The surface is covered by transverse striae and has rib-like annulae that are more prominent at the ventrolateral shoulders but otherwise vaguely defined. The siphuncle is central; interior unknown.
References
Savageoceras Wikipedia(Text) CC BY-SA