Cephalopoda - Ammonoidea - Neocomitidae

Parent taxon: Endemoceratinae according to J. Klein 2005

Sister taxa: Distoloceras, Favrella, Leopoldia, Lyticoceras

Subtaxa: Acanthodiscus magnificus, Acanthodiscus radiatus, Acanthodiscus subradiatus

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Type: Ammonites radiata

Ecology: fast-moving nektonic carnivore