| Aulacostephanidae Temporal range: Jurassic (Oxfordian-Tithonian), 160–150.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
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| Fossil shell of Rasenia cymodoce from Calvados (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Superfamily: | †Perisphinctoidea |
| Family: | †Aulacostephanidae Spath, 1924 |
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.
Genera
Genera within this family include:
References
- JOHN K. WRIGHT The Aulacostephanidae (Ammonoidea) of the Oxfordian/Kimmeridgian boundary beds (Upper Jurassic) of southern England
- Ammonites Archived 2021-05-14 at the Wayback Machine
| Taxon identifiers | |
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| Aulacostephanidae | |
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