Kosmoceratidae
Extinct family of ammonites
Kosmoceratidae Temporal range: Middle Jurassic PreꞒ Ꞓ O S D C P T J K Pg N | |
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Fossil shell of Kosmoceras spinosum from Calvados (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 |
Superfamily: | †Stephanoceratoidea |
Family: | †Kosmoceratidae Haug, 1887 |
Species[1] | |
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Kosmoceratidae is an extinct ammonite family from the Callovian (Middle Jurassic) to Early Cretaceous.
Kosmoceratidae are probably the most polymorphic groups of Jurassic ammonites. These ammonoids have a more or less tabulate venter, with lateral or ventrolateral tubercles. The aptychus is double valved with a concentrically ribbed surface.[2]
References
- Philippe Courville, Catherine Crônier - Diversity or Disparity in the Jurassic (Upper Callovian) genus Kosmoceras (ammonitina): A Morphometric Approach
External links
- Crioceratites
- Ammonites
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