Olenecoceras

Olenecoceras Temporal range: Middle Cambrian PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	incertae sedis
Genus:	†Olenecoceras

Olenecoceras is a genus of Middle Cambrian^[1] fossil that, once believed to be a cephalopod, has since been excluded from that group (although no alternative classification has been offered).^[2]

References

1. ^ Dzik, J (1981). 26. pp. 161–191. http://www.app.pan.pl/archive/published/app26/app26-161.pdf. 
2. ^ Clarke, M.R.; Trueman, E.R. (1985), "Main features of cephalopod evolution", in Wilbur, Karl M.; Clarke, M.R.; Trueman, E.R., The Mollusca, 12. Paleontology and neontology of Cephalopods, New York: Academic Press, ISBN 0-12-728702-7