- Cranocephalites
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Cranocephalites
Temporal range: M Jurassic[1]Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Subclass: Ammonoidea Order: Ammonitida Superfamily: Stephanocerataceae Family: Cardioceratidae Genus: Cranocephalites Cranocephalites is a Middle Jurassic (Calovian) 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
- ^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology 364: p.560. http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=231&rank=class. Retrieved 2008-04-05.
- 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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