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Coeloceras
Taxonomy
Coeloceras was named by Hyatt (1867) [Sepkoski's age data: J Plie-l Sepkoski's reference number: 302]. It is not extant.
It was reranked as Stephanoceras (Coeloceras) by Rothpletz (1892).
It was assigned to Stephanoceras by Rothpletz (1892); to Coeloceratinae by Bremer (1965); to Ammonoidea by Sepkoski (2002); and to Coeloceratidae by Donovan and Surlyk (2003), Howarth (2013).
It was reranked as Stephanoceras (Coeloceras) by Rothpletz (1892).
It was assigned to Stephanoceras by Rothpletz (1892); to Coeloceratinae by Bremer (1965); to Ammonoidea by Sepkoski (2002); and to Coeloceratidae by Donovan and Surlyk (2003), Howarth (2013).