Tetragonites popetensis Yabe 1903 (ammonite)

Cephalopoda - Ammonitida - Tetragonitidae

Synonyms: Lytoceras (Tetragonites) henleyense Anderson 1958, Tetragonites (Saghalinites) henleyense Anderson 1958

Belongs to Tetragonites according to Y. Shigeta 2016

See also Anderson 1958 and Matsumoto 1960

Sister taxa: Litoceras (Tetragonites) zacatecanum, Lytoceras (Tetragonites) epigonum, Lytoceras (Tetragonites) jacksonense, Lytoceras (Tetragonites) kernense, Lytoceras (Tetragonites) kingianum, Tetragonites (Tetragonites), Tetragonites blaisoni, Tetragonites brazoensis, Tetragonites collignoni, Tetragonites epigonus, Tetragonites glabrus, Tetragonites kitchini, Tetragonites margaritatus, Tetragonites marshalli, Tetragonites obscurus, Tetragonites silencioensis, Tetragonites simplex, Tetragonites subtimotheanus, Tetragonites timotheanus, Tetragonites (Carinites) spathi

Type specimens:

  • Tetragonites popetensis: UNUT MM7460, a shell
  • Lytoceras (Tetragonites) henleyense: CAS 444.02, a shell. Its type locality is CAS Loc. 444 - Hornbrook, which is in a Campanian coastal siliciclastic in California.

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell diameter 38.3


• Cretaceous of Japan (4 collections), the Russian Federation (2), United States (1: California)

Total: 7 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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