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Trizonoceras medioximum Ruzhentsev and Bogoslovskaya 1971 (ammonite)

Cephalopoda - Ammonoidea - Dimorphoceratidae

PaleoDB taxon number: 315479

Full reference: V. E. Ruzhentsev and M. F. Bogoslovskaya. 1971. Namurskiy etap v evolyutsii ammonoidey. Rannenamyurskie ammonoidei. Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta 133:1-382

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

Sister taxa: Trizonoceras kathleenae, Trizonoceras leitrimense, Trizonoceras typicale

Type specimen: PIN 455/6813, a shell. Its type locality is Dombar Hills, sample 7, which is in a Pendleian carbonate limestone in Kazakhstan.

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell width 11.5, shell diameter 25.8