Cephalopoda - Nautilida - Tainoceratidae

Full reference: V. N. Shimansky. 1965. Nautiloidea, in The Development and Change of Marine Organisms at the Palaeozoic-Mesozoic Boundary. . Trudy Paleontologischeskii Institut 108:157-165

Belongs to Metacoceras according to C. Teichert and B. Kummel 1973

Sister taxa: Metacoceras altilobatum, Metacoceras artiense, Metacoceras baylorense, Metacoceras bituberculatum, Metacoceras bowmani, Metacoceras cheneyi, Metacoceras chittidilense, Metacoceras copei, Metacoceras dorsoarmatum, Metacoceras dubium, Metacoceras hayi, Metacoceras hunanense, Metacoceras inconspicuum, Metacoceras knighti, Metacoceras kruglovi, Metacoceras medlicottianum, Metacoceras orthogonium, Metacoceras parartiense, Metacoceras subpiszovi, Metacoceras subquadratum, Metacoceras sulciferum, Metacoceras unklesbayi

Type specimen: PIN 1572/246. Its type locality is Dorasham, Julfa Fm, Dzhulfa Gorge, Arax River, which is in a Wuchiapingian marine limestone in the Julfa Formation of Azerbaijan.

Ecology: nektobenthic carnivore

Average measurements (in mm): shell width 17.0, shell diameter 35.0