Borissjakoceras

Systematic Paleontology Order Ammonitida Suborder Ammonitina Superfamily Acanthocerataceae Family Binneyitidae Genus Borissjakoceras

Borissjakoceras, named by Arkangelsky, 1916, is a Late Cretaceous ammonite from Kansas, Montana, and Turkesan, closely related to Binneyites.

The shell of Borissjakoceras is moderately evolute to rather involute. The venter is bluntly trapazoidal to rounded and the surface is smooth except for oblique ribs on the ventro-lateral shoulders.