See text Placostylidae Pilsbry, 1946[3] Bothriembryontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Orthalicoidea.

This family has been named Placostylidae and had no subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

[4] Breure et al. (2010)[5] moved Prestonella and Bothriembryon to Placostylidae.

Breure & Romero (2012)[2] confirmed previous results from 2010 and they renamed Placostylidae to Bothriembryontidae.

[6] Therefore three subfamilies are recognized in Bothriembryontidae: Genera within the family Bothriembryontidae include: Bothriembryontinae Placostylinae Prestonellinae A cladogram based on nuclear ITS2, 28S rRNA and histone 3 (H3) and sequences of mitochondrial cytochrome-c oxidase I (COI) genes showing phylogenic relations of Bothriembryontidae by Breure & Romero (2012):[2] Plectostylus peruvianus Discoleus ameghinoi Prestonella bowkeri Prestonella nuptialis Bothriembryon dux Bothriembryon indutus Placostylus eddystonensis Placostylus ambagiosus Eumecostylus uliginosus Placocharis strangei Bothriembryontidae have Gondwanan distribution.