Cranocephalites

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Cranocephalites
Temporal range: Bajocian–Bathonian[1]
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[edit]

  1. ^ a b Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28. 
  • Treatise on Invertebrate Paleontology, Part L Ammonoidea ; Geological Society of America and Univ of Kansas press, 5th printing, 1990 (p.L301)