Cardioceras
Appearance
Cardioceras | |
---|---|
Fossil of Cardioceras persecans from France, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | †Ammonoidea |
Order: | †Ammonitida |
Family: | †Cardioceratidae |
Genus: | †Cardioceras Neumayr & Uhlig, 1881 |
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]
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, the United Kingdom[1] and Alaska.[6]
References
- ^ a b "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
- ^ Ralph W. Imlay (1981). Late Jurassic Ammonites of Alaska