Condraoceras

{{Short description|Extinct genus of molluscs}}

{{Automatic taxobox

| taxon = Condraoceras

| fossil_range = {{Fossil range |Pennsylvanian | Late Permian}}

| authority = Miller, et al, 1947

}}

Condraoceras is a genus of liroceratids from the Pennsylvanian of North America and Lower Permian of Europe with a compressed, involute, nautiliconic shell; subcircular whorl section; small umbilicus with a rounded shoulder; suture with shallow ventral and lateral lobes; and narrow subcentral siphuncle.

Liroceras, from the same time and type of the family, differs in having a reniform whorl section and essentially straight sutures at maturity. Peripetoceras, another related genus, has a flattened venter, slight ventral and lateral lobes in the suture, and a siphuncle offset dorsally from the center.

''References''

{{Reflist}}

  • Bernhard Kummel, 1964. Nautiloidea -Nautilida; Treatise on Invertebrate Paleontology, Part K. Geol Soc of America and Univ of Kansas press, R.C. Moore (ed) -- Liroceratidae K444 -K447.

{{Taxonbar|from=Q5159359}}

Category:Prehistoric nautiloid genera

Category:Pennsylvanian first appearances

Category:Lopingian genus extinctions

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