''Danoceras'' is an essentially straight shelled oncocerid named by Troedsson in 1926, and included in the

Diestoceratidae Diestoceratidae is a family in the Nautiloidea, nautiloid cephalopod order Oncocerida with compressed, straight to faintly endogastric breviconic shells with a marginal siphuncle that contains discrete, irregular actinosiphonate deposits. The Di ...

. It has been found in the upper, and possibly middle, Ordovician of Europe, (Estonia), Greenland, and Russia, (Taimyr Peninsula). Named species include ''Danoceras ravni'', type, ''D. inutile'', ''D. scandinavicum'', and ''D. skalbergensis''. The ''Danoceras'' shell is oval in section, laterally compressed with broadly rounded sides and narrowly rounded dorsum and venter. Chambers are short, septa close spaced, sutures straight and transverse. The siphuncle is subventral, close to but not touching the ventral margin. In form, cyrtochoanitic, necks recumbent. Related genera include '' Diestoceras'', '' Dowlingoceras'', '' Lychholmoceras'', and '' Suttonoceras''.

References

* Walter C Sweet, 1964. Nautiloidea - Oncocerida.

Treatise on Invertebrate Paleontology The ''Treatise on Invertebrate Paleontology,'' published from 1953–2007 by the Geological Society of America and the University of Kansas, then 2009–present by the University of Kansas Paleontological Institute, is a definitive multi-authore ...

. Geological Society of America and University of Kansas Press. {{Taxonbar, from=Q18350244 Oncocerida Prehistoric nautiloid genera Ordovician cephalopods Fossils of Greenland Middle Ordovician first appearances Late Ordovician extinctions Paleozoic life of Ontario Paleozoic life of Quebec