Perilytoceras
Perilytoceras is a genus of ammonoid cephalopods belonging to the family Lytoceratidae.[1]
| Perilytoceras Temporal range: | |
|---|---|
 | |
| Fossil shell of Perilytoceras species from Tulear (Madagascar) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Family: | †Lytoceratidae |
| Subfamily: | †Megalytoceratinae |
| Genus: | †Perilytoceras Rulleau, 1997 |
These fast-moving nektonic carnivores lived in the Toarcian age (from 182.7 to 174.1 million years ago). Shells could reach a diameter of 20–25 centimetres (7.9–9.8 in).[2]
References
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