Acmaeidae

Acmaeidae is a family of sea snails, specifically true limpets, marine gastropod mollusks in the superfamily Lottioidea and the subclass Patellogastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Taxonomy
Listed as valid family in Bouchet & Rocroi (2005) but this classification revised following the molecular phylogeny of Nakano & Ozawa (2007). Acmaeinae, including Erginus, was found to be paraphyletic. However, this synonymy was subsequently found incorrect, having been the result of contaminated samples, and Acmaea mitra and a related species, Niveotectura pallida form a well-supported clade outside of the Lottiidae, and Acmaeidae was re-established.

Genera

 * Acmaea Eschscholtz, 1833
 * † Marbodaeia Chelot, 1886
 * † Pseudorhytidopilus Cox, 1960
 * Rhodopetala Dall, 1921
 * Synonyms:
 * † Guerangeria Cossmann, 1885 : synonym of † Marbodaeia Chelot, 1886 (preoccupied by Guerangeria Oehlert, 1881 [Bivalvia]; Marbodaeia Chelot, 1886 is a replacement name)
 * † Marbodeia [sic] : synonym of † Marbodaeia Chelot, 1886  (misspelling in Haber (1932) and others)