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, Metophioceras janus, Metophioceras galaczi, Metophioceras conybeari, Metophioceras gracile, Metophioceras bonnardii, Metophioceras rotticus, Metophioceras rotarium, Protocymbites azzouzi
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)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.