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| 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
- 1 2 Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2008-05-07. Retrieved 2017-10-18.
- 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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