Fontannesia
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Fontannesia Temporal range: Middle Jurassic |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Order: | Ammonitida |
| Family: | Sonniniidae |
| Genus: |
Fontannesia Buchman, 1902 |
Fontannesia is an ammonoid cephalopod genus with a small to medium size, evolute, discoidal shell that was extant during the Jurassic Period. The sides are ribbed, the venter has a single median keel, and tubercles are lacking.
Fontannesia is included in the Sonniniidae (Hildoceratoidea) and has been found widespread in Europe, western Australia, Canada, and Argentina.
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