Mcqueenoceras

Mcqueenoceras is an extinct genus of early endocerid, a nautiloid from the Floian epoch of the late early Ordovician period. It was similar in overall form to Clitendoceras, from which it may have been derived. Mcqueenoceras, like Clitendoceras, has ventral siphuncle but the endocones are thicker on the ventral side and thinner on the dorsal. Also the sutures in Mcqueenoceras retreat rearward, forming lobes as they cross the venter. The type species is Mcqueenoceras jeffersonense, named by E.O. Ulrich and A.F. Foerste in 1935, and it is known from Missouri and New York.^[1] In 1956, Rousseau H. Flower named two other species, M. cariniferum and M. ventrale, both known from Maryland.^[2][3]

Mcqueenoceras Temporal range: Floian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Nautiloidea
Order:	†Endocerida
Family:	†Proterocameroceratidae
Genus:	†Mcqueenoceras Ulrich & Foerste, 1935
Type species
Mcqueenoceras jeffersonense Ulrich & Foerste, 1935
Other species
Mcqueenoceras cariniferum Flower, 1956 Mcqueenoceras ventrale Flower, 1956