-
Chicagooceras is a
genus of
orthocerids from the
Silurian of
North America. S**** are short, breviconic, and
faintly curved.
Sutures are
fairly wide...
- †Chadwickoceras †Charactoceras †Charactocerina †Chazyoceras †Chepuloceras †
Chicagooceras †Chidleyenoceras †Chisloceras †Choanoceras †Chouteauoceras †Chrysoceras...
