Cephalopoda - Ammonitida - Perisphinctidae

Alternative spelling: Simosphinctes (Ceratosphinctes)

Parent taxon: Idioceratinae according to F. Olóriz and A. B. Villaseñor 2006

Sister taxa: Barthelticeras, Idoceras, Lessiniceras, Nebrodites, Presimoceras, Trenerites

Subtaxa: Ceratosphinctes rachistrophus Ceratosphinctes septenarius

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Type: Ammonites rachistrophus

Ecology: fast-moving nektonic carnivore

Distribution: found only at Amatitla (Jurassic of Mexico)

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Specimen images are retrieved through the ePANDDA API.