Monocyrtoceras
Appearance
Monocyrtoceras Temporal range: Middle Silurian
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Genus: | Monocyrtoceras Foeste, 1924.
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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
- Curt Teichert, 1964. Actinoceratoidea, Treatise on Invertebrate Paleontology, Part K. Geological Society of America and University of Kansas Press.