Cardioceras
Cardioceras is an extinct ammonite genus belonging to the family Cardioceratidae. These fast-moving nektonic carnivores lived during the Jurassic period, Oxfordian age.[2][3]
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| Fossil of Cardioceras persecans from France, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
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| Genus: | Cardioceras |
Description
Shells of Cardioceras species can reach a diameter of 20–25 millimetres (0.79–0.98 in).[4] The shape is circular, with ribs and a prominent ridge along the dorsal edge.[5]
Distribution
Fossils of species within this genus have been found in the Jurassic of France, Germany, Poland, Russia and United Kingdom.[1]
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References
- "Paleobiology Database - Cardioceras". 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 2008-05-07. Retrieved 2017-10-18.
- Mikko's Phylogeny Archive
- Cardioceras.ru
- Encyclopædia Britannica
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