Rossia megaptera, also known as the big-fin bobtail squid, is a species of bobtail squid native to the north-western Atlantic Ocean, specifically Davis Strait, western Greenland, and off New York, in Hudson Canyon. It lives at depths from 179 to 1,536 m.Reid, A. & P. Jereb 2005. Family Sepiolidae. In: P. Jereb & C.F.E. Roper, eds. Cephalopods of the world. An annotated and illustrated catalogue of species known to date. Volume 1. Chambered nautiluses and sepioids (Nautilidae, Sepiidae, Sepiolidae, Sepiadariidae, Idiosepiidae and Spirulidae). FAO Species Catalogue for Fishery Purposes. No. 4, Vol. 1. Rome, FAO. pp. 153–203. It can grow up to 41 mm in mantle length.Stephen, S.J. 1982. An Annotated Checklist/Key of the Cephalopods of the Canadian Atlantic. A document of The Huntsman Marine Laboratory, St. Andrews, New Brunswick.Latitude and Longitude Data for Rossia megaptera

This type specimen was collected in the north-western Atlantic Ocean and is deposited at the Peabody Museum of Natural History in New Haven, Connecticut.Current Classification of Recent Cephalopoda

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