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Spiroceras (ammonite)

Cephalopoda - Ammonitida - Spiroceratidae

PaleoDB taxon number: 15658

Synonyms: Patoceras Meek 1876 (no. 357968), Plagiamites Buckman 1925 (no. 357969), Rhabdodites Buckman 1923 (no. 357970)

Parent taxon: Spiroceratidae according to M. R. Majidifard 2015

Sister taxa: Kumetaceras, Sikeliceras

Subtaxa: Spiroceras althoffi, Spiroceras annulatum, Spiroceras bifurcatum, Spiroceras bispinatum, Spiroceras fourneti, Spiroceras obliquecostatum, Spiroceras orbignyi

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Ecology: fast-moving nektonic carnivore