Crioceratites

Crioceratites
Temporal range: Valanginian–Barremian[1]
Crioceratites species
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Superfamily: Ancylocerataceae
Family: Crioceratitidae
Genus: Crioceratites
Léveillé 1837
Synonyms
  • Crioceras d'Orbigny, 1842
  • Crioceratites (Crioceras) d'Orbigny, 1842
  • Toxoceras d'Orbigny, 1842

Crioceratites is an ammonite genus from the Early Cretaceous belonging to the Ancylocerataceae.

Crioceratites was formerly included in the Ancyloceratidae, in the subfamily Crioceratinae which was subsequently elevated in rank to the family Crioceratidae. Crioceras and Toxoceras d'Orbigny and possibly Emericiceras Sarka 1954 are junior synonyms.

Species

Species within the genus Crioceratites include:[2]

Description

Crioceratites duvalii, on display at Galerie de paléontologie et d'anatomie comparée in Paris

Crioceritites is coiled in an open, normally equiangular spiral with an oval or subquadrate whorl section. The surface is banded by fine, dense, rounded ribbing sectioned by periodically spaced thick and often spinose ribs.

Distribution

Crioceratities fossils have been found in Lower Cretaceous Hauterevian-Barremanian, sediments in Europe, Africa, Asia, North America and South America.

References

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


This article is issued from Wikipedia - version of the Wednesday, August 05, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.