ammonites
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†family Olcostephanidae Haug 1910 (ammonite)

Cephalopoda - Ammonoidea

PaleoDB taxon number: 131154

Parent taxon: Perisphinctoidea according to C. González-Arreola et al. 2017

Sister taxa: none

Subtaxa: Maderia, Mexicanoceras, Olcostephaninae, Spiticeratinae

View classification

Type: Olcostephanus

Ecology: fast-moving nektonic carnivore