Temperoceras
Temperoceras is a genus of orthoconic nautiloid cephalopods named by Barskov in 1960 that lived in what is now north Africa, Europe, and Asia during the early Paleozoic. Taxonomy. "Temperoceras" is included in the orthocerid family Geisonoceratidae the type is "Orthoceras ludense" Morphology. "Temperoceras" has an orthoconic shell with a tubular siphuncle that contains annular deposits that are restricted to or begin at the septal openings. Distribution. "Temperoceras" has been found in sediments ranging in age from Ordovician to Devonian in north Africa, southern Europe, and China.