Plesiothyreus

Plesiothyreus is a genus of very small sea snails or limpets, marine gastropod mollusks in the subfamily Phenacolepadinae of the family Phenacolepadidae.

Species
Species within the genus Plesiothyreus include:
 * Plesiothyreus aculeatus (Pease, 1868)
 * Plesiothyreus arabicus (K.H.J. Thiele, 1909 ) (synonym: Phenacolepas arabica K.H.J. Thiele, 1909 )
 * Plesiothyreus brocki (Thiele, 1909)
 * Plesiothyreus cancellatus (Pease, 1861)
 * Plesiothyreus cinnamomeus (Gould, 1846)
 * Plesiothyreus compressus (Pease, 1868)
 * Plesiothyreus cosmanni Jousseaume, 1894
 * Plesiothyreus cytherae (Lesson, 1831)
 * Plesiothyreus elongatus (Thiele, 1909)
 * Plesiothyreus evansi (Biggs, 1973)
 * Plesiothyreus fischeri (Rochebrune, 1882)
 * Plesiothyreus galathea (J.B.P.A. Lamarck, 1819) (synonym: Phenacolepas galathea (J.B.P.A. Lamarck, 1819)
 * Plesiothyreus granocostatus (Pease, 1868)
 * Plesiothyreus granulosus (Thiele, 1909)
 * Plesiothyreus guttatus (Thiele, 1909)
 * Plesiothyreus hamillei (P. Fischer, 1857)
 * Plesiothyreus indicus (Thiele, 1909)
 * Plesiothyreus malonei (Vanatta, 1912)
 * Plesiothyreus newtoni G. B. Sowerby III, 1894
 * Plesiothyreus omanensis (Biggs, 1973)
 * Plesiothyreus pararabicus (Christiaens, 1988)
 * † Plesiothyreus parmophoroides (Cossmann, 1885)
 * Plesiothyreus peelae Christiaens, 1989
 * † Plesiothyreus pliocenicus (Chirli, 2004)
 * Plesiothyreus puntarenae (Mörch, 1860)
 * Plesiothyreus radiatus (Schepman, 1908)
 * Plesiothyreus reticulatus (Thiele, 1909)
 * Plesiothyreus scobinatus (A. Gould, 1859)
 * Species brought into synonymy:
 * Plesiothyreus asperulatus (A. Adams, 1854) : synonym of Phenacolepas galathea (Lamarck, 1819) : synonym of Zacalantica galathea (Lamarck, 1819) (based on nomen nudum)
 * Plesiothyreus cosmani Jousseaume, 1894 : synonym of Plesiothyreus cossmanni J ousseaume, 1894 (incorrect original spelling)
 * Plesiothyreus rushii (Dall, 1889) : synonym of Hyalopatina rushii (Dall, 1889)
 * Plesiothyreus gruveli (Dautzenberg, 1929) (uncertain > taxon inquirendum)