Donacoceras
Introduction '''''Donacoceras''''' is an extinct genus of actively mobile carnivorous cephalopod, essentially a ''Nautiloid''  that lived in what would be North America during the Ordovician from 460.5—443.7 mya, existing for approximately .
Taxonomy ''Donacoceras'' was named by Foerste (1925). It was assigned to ''Orthocerida'' by Teichert et al. (1964); and to ''Endocerida'' by Sepkoski (2002).
Morphology The shell is usually long, and may be straight ("orthoconic") or gently curved. In life, these animals may have been similar to the modern squid, except for the long shell.
Fossil distribution Fossil distribution is exclusive to Gaspé Peninsula, Quebec, Canada.
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