Definition of Clarkoceras. Meaning of Clarkoceras. Synonyms of Clarkoceras

- Ellesmerocerida and renamed it Clarkoceras newton-winc****i (Clarke), which became the genotype. The earliest known Clarkoceras comes from the upper Trempealeauan...
- crossed (barely) into the Ordovician, with two genera, Ectenolites and Clarkoceras. Ordovician ellesmerocerids in turn likely gave rise to several new nautiloid...
- other Late Cambrian ellesmeroceratid genera, except for Ectenolites and Clarkoceras, which persisted into the Ordovician. Late Cambrian Tanycamerocers (Ellesmeroceratidae)...
- restricted to the Wan****ou, except for Clarkoceras and Ectenolites, which persist into the Lower Ordovician. Clarkoceras and Ectenolites provide the ancestry...
- †Cincinnetina †Cincinnetina multisecta †Cladochonus †Clarkeipterus †Clarkoceras †Climacograptus †****endoceras †Clorinda †Coenites †Columnaria †Conocardium...
- †Chonetes †Chonetes geniculatus †Chonetes mesoloba †Chonetes ornatus †Clarkoceras †Cleiothyridina †Cleiothyridina incr****ata †Cleiothyridina orbicularis...
- Ellesmeroceratidae, continued by means of the genera Ectenolites and Clarkoceras into the Gasconadian in the Lower Ordovician. The other three, Acaroceratidae...
- †Chouteauoceras †Chrysoceras †Chuticeras †Cimonia †Cinctoceras †Clarkesvillia †Clarkoceras †Clathroceras †Clelandoceras †Cliftonoceras †Clinoceras †Clionyssiceras...
- †Christiania †Cincinnetina †Cincinnetina m****i †Cincinnetina multisecta †Clarkoceras – tentative report †Cleiothyridina †Cleiothyridina sublamellosa – or...
- testudineus – type locality for species †Clarkoceras †Clarkoceras rhomboidale †Clarkoceras ruedemanni †Clarkoceras trapezoidale †Clathrodictyon †Clathropora...