Cadoceras
Temporal range: late Bajocian - early Callovian) [1]
C. elatmae fossil from Russia
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: †Ammonoidea
Order: †Ammonitida
Family: †Cardioceratidae
Genus: †Cadoceras
Fischer, 1882

Cadoceras is an extinct ammonite genus belonging to the Cardioceratidae that lived during the Jurassic period from the late Bajocian to the early Callovian.[2]

Morphology

The typical Cadoceras shell is strongly ribbed, subglobular, with a broadly rounded venter, strongly embracing whorls, deep umbilicus, and a smile-like crescent-shaped aperture. Ribs arise from the umbilical shoulder and bifurcate (divide in two) about mid flank and cross the venter without interruption. Species vary in the nature of ribbing and roundness of the umbilical shoulder.[3][4]

Distribution

Fossils of species within this genus have been found in Jurassic sediments of Canada, Germany, Russia, and the UK.[1] [5]

References

  1. 1 2 Cadoceras in Fossilworks.
  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.
  3. ↑ "ammonites.fr Cadoceras entry". Archived from the original on 2021-04-13. Retrieved 2015-03-18.
  4. ↑ jsdammonites.fr Cardioceratidae entry
  5. ↑ jncc.gov.uk 'The Middle Jurassic stratigraphy of the Cotswolds'


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.