Bivalvia - Ostreida - Gryphaeidae

Alternative combination: Gryphaea wratheri

Belongs to Pycnodonte (Phygraea) according to R. L. Squires and R. Demetrion 1990

Sister taxa: Pycnodonte (Phygraea) pacifica, Pycnodonte (Phygraea) pseudovesicularis, Pycnodonte (Phygraea) vesiculare