Phenacolepadidae Pilsbry, 1900
Plesiothyreus ancyliformis
Plesiothyreus cossmanni Jousseaume, 1894
Plesiothyreus galathea (Lamarck, 1819)
Plesiothyreus hamillei (P. Fischer, 1857)
Plesiothyreus newtoni G.B. Sowerby Iii, 1894
Plesiothyreus parmophoroides
Plesiothyreus rushii (Dall, 1889)
Plesiothyreus squamosa Garrett, 1877
