Cochlioceras

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 Temporal range: 478 – 464 Ma Upper Lower to Lower Middle Ordovician PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Order:	†Orthocerida
Family:	†Baltoceratidae
Genus:	†Cochlioceras Eichwald (1860)

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]