Invalid names: Pecten (Plagioctenium) calli Hertlein 1925 [synonym], Pecten (Plagioctenium) circularis Sowerby 1835 [synonym], Pecten (Plagioctenium) newsomi Arnold 1903 [synonym], Pecten (Plagioctenium) subventricosus Dall 1898 [synonym], Pecten compactus Dall 1898 [synonym], Pecten fililextus Li 1930 [synonym], Pecten inca d'Orbigny 1846 [synonym], Pecten newsomi Arnold 1903 [synonym], Pecten solidulus Reeve 1853 [synonym]