Bivalvia - Ostreida - Posidoniidae

Alternative combination: Claraia aranea

Full reference: E. T. Tozer. 1961. Triassic stratigraphy and faunas, Queen Elizabeth Islands, Arctic Archipelago. Geological Survey of Canada Memoir 316:1-116

Belongs to Posidonia according to E. T. Tozer 1961

Sister taxa: Posidonia blatchleyi, Posidonia circularis, Posidonia daytonensis, Posidonia dianensis, Posidonia jacksoni, Posidonia limbata, Posidonia madisonensis, Posidonia olenekensis, Posidonia ostenfeldii, Posidonia semiundata, Posidonia somaliensis, Posidonia wengensis

Type specimen: GSC 14202, a valve (Right valve). Its type locality is GSC 28450, Otto Fiord, Ellesmere Island, which is in a Spathian deep-water siliciclastic in the Blind Fiord Formation of Canada.

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): valve length 25.9