ammonites
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Stephanoceras Waagen 1869 (ammonite)

Cephalopoda - Ammonitida - Stephanoceratidae

PaleoDB taxon number: 15667

Alternative spellings: Ammonites (Stephanoceras), Coeloceras (Stephanoceras), Stepheoceras

Synonym: Kreterostephanus Buckman 1927 (taxon 350971)

Parent taxon: Stephanoceratinae according to J. Sandoval and E. G. Westermann 1986

Sister taxa: Duashnoceras, Normannites, Teloceras

Subtaxa: Stephanoceras arabicum, Stephanoceras boulderense, Stephanoceras psilacanthus, Stephanoceras skidegatense

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Ecology: fast-moving nektonic carnivore