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
Temporal range: Jurassic (Oxfordian-Tithonian), 160–150.8 Ma
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

Genera

Genera within this family include: [1][2]

References
  1. Paleobiology Database
  2. Sepkoski Online


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