ammonites
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Syrdenites Nassichuk et al. 1965 (ammonite)

Cephalopoda - Ammonoidea - Medlicottiidae

PaleoDB taxon number: 13995

Full reference: W. W. Nassichuk, W. M. Furnish, and B. F. Glenister. 1965. The Permian ammonoids of Arctic Canada. Geological Survey of Canada Bulletin 131:1-56

Parent taxon: Medlicottiinae according to W. M. Furnish et al. 2009

Sister taxa: Artinskia, Eumedlicottia, Medlicottia, Neogeoceras

Subtaxa: Syrdenites stoyanowi

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Type: Syrdenites stoyanowi

Ecology: fast-moving nektonic carnivore