ammonites
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†family Aulacostephanidae Spath 1924 (ammonite)

Cephalopoda - Ammonoidea

PaleoDB taxon number: 309562

Parent taxon: Perisphinctoidea according to J. K. Wright 2010

Sister taxa: none

Subtaxa: Aulacostephanus, Gravesia, Gravesiinae, Microbiplices, Pictonia, Prorasenia, Ringsteadia, Vielunia

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Ecology: fast-moving nektonic carnivore