Aulacosphinctes

Aulacosphinctes
Temporal range: Tithonian[1]
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Superfamily: Perisphinctaceae
Family: Berriasellidae
Genus: Aulacosphinctes
Uhlig, 1910

Aulacosphinctes is an extinct 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

Notes
  1. Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
Bibliography
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