ammonites
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Nomismoceras spirorbis Phillips 1836 (ammonite)

Cephalopoda - Ammonoidea - Nomismoceratidae

PaleoDB taxon number: 316187

Alternative combination: Goniatites spirorbis

Belongs to Nomismoceras according to V. E. Ruzhentsev and M. F. Bogoslovskaya 1971

Sister taxa: Nomismoceras (Anthracoceras), Nomismoceras frechi, Nomismoceras germanicum, Nomismoceras rotiforme, Nomismoceras vittigerum

Ecology: fast-moving nektonic carnivore