Monocyrtoceras

Monocyrtoceras
Temporal range: Middle Silurian
Scientific classification
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Actinocerida
Family: Armenoceratidae
Genus: Monocyrtoceras
Foeste, 1924.

Monocyrtoceras is an armenoceratid, (Cephalopoda), from the Middle Silurian of North America, (Wisconsin), with a gently curved shell and a siphuncle like that of Elrodoceras.

According to Teichert, 1964, in the Treatise part K, Monocyrtoceras along with Elrodoceras and Armenoceras forms one of the two branches of the Armenoceratidae.

References