Rhynchonellata - Orthida - Schizophoriidae

Alternative combination: Acosarina avushensis

Full reference: A. N. Sokolskaja. 1965. Orthids, Strophomenids, Chonetids, and Rhynchonellids, in The Development and Change of Marine Organisms at the Palaeozoic-Mesozoic Boundary. Trudy Paleontologischeskii Institut 108:198-236

Belongs to Orthotichia according to T. A. Grunt and M. V. Novikova 2002

Sister taxa: Orthotichia altilis, Orthotichia chekiangensis, Orthotichia derbyi, Orthotichia fushanensis, Orthotichia gypidularhynchia, Orthotichia hueconiana, Orthotichia irregularis, Orthotichia japonica, Orthotichia jiangxiensis, Orthotichia kozlowskii, Orthotichia latirostrata, Orthotichia lengshuixiensis, Orthotichia lentiformis, Orthotichia magnifica, Orthotichia marmorea, Orthotichia morganiana, Orthotichia nana, Orthotichia nawtawaketensis, Orthotichia newelli, Orthotichia parva, Orthotichia pentamera, Orthotichia sulcata, Orthotichia tongluensis, Orthotichia transversa, Orthotichia trigona, Orthotichia xizangensis

Type specimen: PIN 2072/55. Its type locality is Ogbin 2, Gnishik Fm, Dzhagra River, which is in a Wordian marine horizon in the Gnishik Formation of Armenia.

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): shell 16.3 x 17.7, valve 17.2 x 18.0