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Danoceras
''Danoceras'' is an essentially straight shelled Oncocerida, oncocerid named by Troedsson in 1926, and included in the Diestoceratidae. 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. Geological Society of America and University of Kansas Press. {{Taxonbar, from=Q1835024 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Diestoceratidae contains five known genera. They are: *''Diestoceras'' *''Danoceras'' *''Dowlingoceras'' *''Lyckholmoceras'' *''Suttonoceras'' References External linksDiestoceratidae -Paleobio db * Sweet, Walter C. 1964. Nautiloidea -Oncocera. Treatise on Invertebrate Paleontology, Part K. Geological Soc. of America & Univ Kansas Press. {{Taxonbar, from=Q5275040 Oncocerida Prehistoric nautiloid families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |