Osbornoceras information

Osbornoceras is a genus of Lower Silurian cyrtoconic nautiloid cephalopods known from Ohio and possibly Manitoba, one of five general currently included...

outwardly curved; connecting rings are thin. Genera include Karoceras, Osbornoceras, and possibly Shuranoceras, which have been found in sediments ranging...

†Ordosoceras †Ormoceras †Orthoceras †Orthocycloceras †Orthonybyoceras †Osbornoceras †Ovoceras †Ovocerina †Oxfordoceras †Oxygonioceras †Oxynautilus †Pachendoceras...

the adoral end. Ankyloceras is similar in overall form to the earlier Osbornoceras from North America, except for the details of the siphuncle. Similar...