Ohioceras

Ohioceras is an extinct genus of suborthochonic nautiloids from the Silurian of Ohio belonging to the orthoceroid family Kionoceratidae.

Ohioceras
Temporal range: M Silurian
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Orthocerida
Family:
Kionoceratidae
Genus:
Ohioceras

Shimazu & Obata, 1935

Ohioceras is characterized by a slightly curved longiconic shell with a circular to slightly depressed cross section. The surface is lined with broad, low, longitudinal ribs separated by distinct shallow grooves. The siphuncle is subcentral, apparently orthochoanitic.

References
    • Sweet, Walter C. 1964. Nautiloidea-Orthocerida. Treatise on Invertebrate Paleontology, Part K. Geological Soc of America, and Univ Kansas Press.
    • Ohioceras -Paleobio db.
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