Metophioceras trigonatum Taylor 1998 (ammonite)

Cephalopoda - Ammonitida - Arietitidae

Full reference: D. G. Taylor. 1998. Late Hettangian-early Sinemurian (Jurassic) ammonite biochronology of the western Cordillera, United States. Geobios 31:467-497

Belongs to Metophioceras according to D. G. Taylor 1998

Sister taxa: Vermiceras (Gyrophioceras), Vermiceras (Paracaloceras), Vermiceras (Vermiceras), Vermiceras densicostatum, Vermiceras spiratissimum, Protocymbites azzouzi, Metophioceras bonnardii, Metophioceras galaczi, Metophioceras gracile, Metophioceras rotarium, Metophioceras conybeari, Metophioceras janus, Metophioceras rotticus

Type specimen: NWMNH 25033, a shell. Its type locality is First Canyon, Shoshone Mountains (M. trigonatum assemblage), which is in a Bucklandi marine limestone in the Sunrise Formation of Nevada.

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell diameter 60.2

Distribution: found only at First Canyon, Shoshone Mountains (M. trigonatum assemblage)

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Specimen images are retrieved through the ePANDDA API.

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