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Bonarellia bicostata Stahl 1824 (ammonite)

Cephalopoda - Ammonitida - Oppeliidae

PaleoDB taxon number: 324473

Alternative combination: Ammonites bicostatus

Synonym: Ammonites bipartitus Zieten 1830 (taxon 324474)

Belongs to Bonarellia according to A. Jeannet 1951

Sister taxon: Bonarellia nodulosa

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell width 8.45, shell diameter 31.8