Cardioceras | |
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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]
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]
Fossils of species within this genus have been found in the Jurassic of France, Germany, Poland, Russia, the United Kingdom [1] and Alaska. [6]