Species
The following species have been described: * ''C. acadianum'' * ''C. aliforme'' ( type) * ''C. altum'' * ''C. aquisgranense'' * ''C. armatum'' * ''C. cresswelli'' * ''C. decussatum'' * ''C. denticulatum'' * ''C. elongatum'' * ''C. eximum'' * ''C. ferox'' * ''C. formosum'' * ''C. frater'' * ''C. fusiforme'' * ''C. gogoensis'' * ''C. gympiense'' * ''C. hainense'' * ''C. immatura'' * ''C. incarceratum'' * ''C. inceptum'' * ''C. inflatum'' * ''C. konincki * ''C. longipennis'' * ''C. lyelli'' * ''C. nexile'' * ''C. oehlerti'' * ''C. philipsii'' * ''C. plinthinatus'' * ''C. prunum'' * ''C. pseudobellum'' * ''C. regulare'' * ''C. renardi'' * ''C. retusum'' * ''C. richmondense'' * ''C. securiforme'' * ''C. sowerbyi'' * ''C. spinalatum'' * ''C. tripartitum'' * ''C. truncata'' * ''C. truncatum'' * ''C. uralicum'' * ''C. ventriculosum'' * ''C. villmarense''References
Further reading
* Dinosaurs to Dodos: An Encyclopedia of Extinct Animals by Don Lessem and Jan Sovak * Parker, Steve. Dinosaurus: the complete guide to dinosaurs. Firefly Books Inc, 2003. Pg. 40 Ordovician molluscs Silurian molluscs Devonian molluscs Carboniferous molluscs Permian molluscs Ordovician first appearances Lopingian genus extinctions Fossils of Sweden Fossils of Poland Fossils of India Silurian Brazil Fossils of Brazil Permian Peru Fossils of Peru Paleozoic life of Alberta Paleozoic life of the Northwest Territories Paleozoic life of Nunavut Fossil taxa described in 1835 Taxa named by Heinrich Georg Bronn {{Paleo-mollusc-stub