Cheltonia
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Cheltonia Temporal range: Sinemurian |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Superfamily: | Psiloceratoidea |
| Family: | Oxynoticeratidae |
| Genus: |
Cheltonia Buckman 1904 |
| Type species | |
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Ammonites accipitris Buckman, 1844 |
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| Species | |
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Cheltonia is an extinct genus of ammonite from the Upper Sinemurian substage of Lower Jurassic of Europe, Africa, and America. It is probably a microconch of genus Oxynoticeras.
Ammonites belonging to this genus had small platyconic shell, on which the last whorl has been eccentrically coiled. Ventral rostrum could be preceded by 3 to 5 crawlings. Umbilicus took about 30—40% of diameter. Ribs were falcoid and weak. Suture has been the same as in the case of young Oxynoticeras.
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