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Temporal range: 478 – 464 Ma Upper Lower to Lower Middle Ordovician
Scientific classification e
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]


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]


  1. ^ a b 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 Palaeontology. 81 (6): 1266–1283. doi:10.1666/06-013.1.