Cadoceras

From Wikipedia, the free encyclopedia

Cadoceras
Temporal range: late Bajocian - early Callovian) 164.7–161.2 Ma
[1]
Cardioceratidae - Cadoceras elatmae.JPG
C. elatmae fossil from Russia
Scientific classification
Kingdom:
Class:
Order:
Family:
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 and Russia.[1]

References[]

  1. ^ a b 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
  4. ^ jsdammonites.fr Cardioceratidae entry


Retrieved from ""