Cranocephalites

Cranocephalites; Temporal range: Bajocian–Bathonian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Superfamily:	Stephanocerataceae
Family:	Cardioceratidae
Genus:	Cranocephalites

Cranocephalites is a Middle Jurassic^[1] ammonitid genus named by Spath in 1932 and included in the family Cranoceratidae, superfamily Stephanoceratacea.

Cranocephalites, sometimes considered a subgenus of Arctocephalites which has sharply ribbed inner whorls and a smooth outer whorl, has a constricted eccentric body chamber. It is found in middle Jurassic sediments in Alaska, Greenland, Novaya-Zemlya, and eastern Siberia.

References

^ ^a ^b Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28. {{cite journal}}: Cite has empty unknown parameter: |coauthors= (help); Cite journal requires |journal= (help)

Treatise on Invertebrate Paleontology, Part L Ammonoidea ; Geological Society of America and Univ of Kansas press, 5th printing, 1990 (p.L301)

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[Sepkoski_Ceph-1] Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28. {{cite journal}}: Cite has empty unknown parameter: |coauthors= (help); Cite journal requires |journal= (help)

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