ammonites
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Guexiceras Taylor 1998 (ammonite)

Cephalopoda - Ammonitida - Arietitidae

PaleoDB taxon number: 297585

Full reference: D. G. Taylor. 1998. Late Hettangian-early Sinemurian (Jurassic) ammonite biochronology of the western Cordillera, United States. Geobios 31:467-497

Parent taxon: Arietitinae according to D. G. Taylor 1998

Sister taxa: Arnioceras, Coroniceras, Longziceras, Metarnioceras, Schreinbachites, Tmaegoceras, Vermiceras

Subtaxa: Guexiceras profundus

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Ecology: fast-moving nektonic carnivore