Article · Wikipedia archive · Last revised Aug 3, 2026

Cochlioceras

Cochlioceras is an extinct baltoceratid genus from the lower and middle Ordovician of what are now Europe, the U.S. (Vermont), and China, having existed for approximately 14 million years, from about 478 to 464 mya.

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Aug 3, 2026
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Cochlioceras
Temporal range:
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: †Orthocerida
Family: †Baltoceratidae
Genus: †Cochlioceras
Eichwald (1860)

Cochlioceras is an extinct baltoceratid genus from the lower and middle Ordovician (Arenig - Llanvrin) of what are now Europe, the U.S. (Vermont), and China, having existed for approximately 14 million years, from about 478 to 464 mya.1

Taxonomy

Cochlioceras was named by Eichwald (1860). Its type is Cochlioceras avus. It was assigned to the Baltoceratidae by Furtnish and Glensiter in Teichert et al. (1964)1 and removed, with the Baltoceratidae, from the Ellesmerocerida to the Orthocerida by Kroger et al. (2007)2

References

References

  1. Teichert et al 1964, Treatise on Invertebrate Paleontology Part K; Nautiloidea - Ellesmerocerida by W.M. Furnish and Brian F. Glenister, pp K129 -K160.
  2. Kroger, B. (2007). "Early orthoceratoid cephalopods from the Argentine Precordillera". Journal of Paleontology. 81 (6): 1266–1283. doi:10.1666/06-013.1.