// Workers AI · dad joke modeWhat did the Cardioceras say? I'm shell-shocked.
| Cardioceras | |
|---|---|
 | |
| Fossil of Cardioceras persecans from France, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
Scientific classification  | |
| 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
[edit]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
[edit]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
[edit]- 1 2 "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
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