Quebecoceras
Introduction '''''Quebecoceras''''' is an extinct genus from the nautiloid order Ellesmerocerida that lived during the Gasconadian Stage at the beginning of the Early Ordovician. ''Quebecoceras'' is a cyrtoconic, similar to ''Dakeoceras'' and ''Paradakeoceras'' except for having a circular cross section and more persistent curvature and rate of expansion. ''Paradakeoceras'' differs in having a somewhat flattened venter.The only known species, ''Quebecoceras quebecense'',  is half again a large as the largest known ''Dakeoceras'', making it a fairly large ellesmeroceratid genus.
See also *List of nautiloids
References * Flower, R.H. 1964.The Nautiloid Order Ellesmerocerida (Cephalopoda); Memoir 12, New Mexico Bureau of Mines and Mineral Resources, Socorro N.M. * W. M. Furnish & Brian F. Glenister, 1964.Nautiloidia—Ellesmerocerida. Treatise on Invertebrate Paleontology, Part K. Geological Society of America, Teichert and Moore (eds). * Sepkoski, J.J. Jr. 2002.A compendium of fossil marine animal genera. D.J. Jablonski & M.L. Foote (eds.). ''Bulletins of American Paleontology'' '''363''': 1–560.Sepkoski's Online Genus Database (CEPHALOPODA)