Aulacostephanidae
Aulacostephanidae is an extinct ammonoid cephalopod family belonging to the superfamily Perisphinctoidea. These fast-moving nektonic carnivores lived during the Upper Jurassic period, from the Oxfordian to Tithonian ages.
| Aulacostephanidae | |
|---|---|
 | |
| Fossil shell of Rasenia cymodoce from Calvados (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Superfamily: | †Perisphinctoidea |
| Family: | †Aulacostephanidae Spath, 1924 |
References
- JOHN K. WRIGHT The Aulacostephanidae (Ammonoidea) of the Oxfordian/Kimmeridgian boundary beds (Upper Jurassic) of southern England
- Ammonites
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