| Acanthaecites Temporal range: Callovian |
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|---|---|
| Conservation status | |
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Fossil
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Genus: | Acanthaecites Rollier 1909 |
Acanthaecites is an extinct genus of cephalopod belonging to the Ammonite subclass that was first described by Rollier in 1909. Even though some (a minority) of ammonites lived rather sedentary bottom dwelling lives, Acanthaecites was an active, mobile predator that lived a nektonic life style. Acanthaecites both appears and disappears from the fossil record during the Callovian stage of the Jurassic Period.