†Zemistephanus (ammonite)
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Cephalopoda - Ammonitida - Otoitidae
Parent taxon: Otoitidae according to W. J. Arkell et al. 1957
See also Sepkoski 2002
Sister taxa: Docidoceras, Emileia, Frogdenites, Megasphaeroceras, Mollistephanus, Otoites, Parachondroceras, Pseudotoites, Trilobiticeras
Subtaxa: Zemistephanus armatus Zemistephanus corona
Ecology: fast-moving nektonic carnivore
Distribution:
• Jurassic of Australia (4 collections), United States (1: Oregon)
Total: 5 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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