Acmaeidae
Shell of Acmaea mitra
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Patellogastropoda
Superfamily:	Lottioidea
Family:	Acmaeidae Forbes, 1850
Type genus
Acmaea Eschscholtz, 1833

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). ^[1]

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.^[2]

• 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)

• Forbes E. (1850). On the genera of British Patellacea. Report of the 19th meeting of the British Association for the Advancement of Science [Birmingham, 1849]. Notices and Abstracts of Communication. 75-76.
• Lindberg D.L. (1981). Rhodopetalinae, a new subfamily of Acmaeidae from the boreal Pacific: anatomy and systematics. Malacologia. 20(2): 291-305.