Aulacosphinctes

Aulacosphinctes; Temporal range: Tithonian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Family:	Himalayitidae
Genus:	Aulacosphinctes ; Uhlig, 1910

Aulacosphinctes is an extinct genus of ammonoid cephalopod that lived during the Late Jurassic and had a widespread distribution.

The shell is compressed, covered by strong, distinct, widely bifurcating ribs, some simple, none with tubercles; the venter marked by a deep and persistent groove; lappets rather long. Based on the style of ribbing Aulacosphinctes is included in the Himalayitinae, but could be placed in the Beriasellinae. Aulacosphinctes has been found in the Upper Jurassic (Tithonian) sediments in Algeria, east Africa, India, South America, and possibly California.

Related genera include Hemisphincites, Dickersonia, Durangites, and Himalyites.

References[]

^ "Paleobiology Database - Aulacosphinctes". Retrieved 2017-10-19.
^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2016-02-25. Retrieved 2017-10-18.

Bibliography[]

Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.

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[paleodb-1] "Paleobiology Database - Aulacosphinctes". Retrieved 2017-10-19.

[Sepkoski_Ceph-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 2016-02-25. Retrieved 2017-10-18.

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