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Anagymnotoceras spivaki McLearn 1946 (ceratite)

Cephalopoda - Ammonoidea - Beyrichitidae

PaleoDB taxon number: 176856

Alternative combination: Hollandites spivaki

Belongs to Anagymnotoceras according to C. Ji and H. Bucher 2018

Sister taxa: Anagymnotoceras columbianum, Anagymnotoceras dulanense, Anagymnotoceras favretense, Anagymnotoceras ino, Anagymnotoceras tozeri, Anagymnotoceras variabilis, Anagymnotoceras varium, Anagymnotoceras wrighti

Type specimen: GSC 9483, a shell

Ecology: nektonic carnivore

Average measurements (in mm): shell width 17.4, shell diameter 49.1