Definition of Oonoceras. Meaning of Oonoceras. Synonyms of Oonoceras

- Oonoceras is an extinct genus of fossil cephalopods included in the nautiloid order Oncocerida and the family Oncoceratidae from the Middle Ordovician...
- Richardsonoceras, R. simplex, is from the Middle Ordovician of Ontario. Oonoceras (K288), from the Middle Ordovician to Middle Silurian of Europe and North...
- Europe. Perimecoceras is similar in general form to the oncoceratid genus Oonoceras from which it may have been derived, but differs in having a longer body...
- siphuncle is nummuloidal, containing actinosiphonate deposits within. Oonoceras is similar except for having a generally stronger curvature and a simpler...
- subtriangular transverse sections. The Brevicoceratidae are derived from Oonoceras (Oncoceratidae) and range from the mid-Silurian to the Upper Devonian...
- Silurian of central Europe and which is similar in external form the Oonoceras from the Oncoceratidae. Blakeoceras Bolloceras Conostichoceras Cyrthoceratites...
- Siluro-devonian Nothoceratidae through Oonoceras and to the largely Devonian Polyelasmoceratidae through either Oonoceras or Oocerina.(Sweet 1964) The Oncoceratidae...
- situ O. regulare Öland In situ O. scabridum Södra Bäck, Öland In situ Oonoceras O. pris**** Vistula River, Bydgoszcz Erratic block Phthanoncoceras P. ellipti****...
- †Ogygoceras †Ohioceras †Oligoceras †Oncoceras †Oneotoceras †Onyxites †Oocerina †Oonoceras †Ophidioceras †Ophioceras †Ophionautilus †Oratoceras †Ordosoceras †Ormoceras...
- genus of the Polyelasmoceratidae and is possibly derived from either Oonoceras or Oocerina of the Oncoceratidae based on similarities of the siphuncle...