Class Bivalvia Linnaeus, 1758 - bivalves Subclass Autobranchia Grobben, 1894 Superorder Pteriomorphia Beurlen, 1944 Order Pectinida Gray, 1854 Superfamily †Oxytomoidea Ichikawa, 1958 Family †Otapiriidae Waterhouse, 1982 Subfamily †Asoellinae Begg & Campbell, 1986