Ptychatractidae
Introduction '''Ptychatractidae''' is a taxonomic family of sea snails, marine gastropod mollusks in the superfamily Turbinelloidea.
Taxonomy According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005), the family Ptychatractidae has no subfamilies.
Genera Genera in the family Ptychatractidae include:* ''Egestas'' Finlay, 1926* ''Exilia'' Conrad, 1860* ''Exilioidea'' Grant & Gale, 1931* ''Metzgeria'' Norman, 1879* ''Ptychatractus'' Stimpson, 1865* ''Latiromitra'' Locard, 1897 - In 2010 ''Latiromitra'' has been found to be closely related to Costellariidae in the molecular phylogeny analysis by Fedosov & Kantor (2010). ;Genera brought into synonymy:* ''Benthovoluta'' Kuroda & Habe, 1950: synonym of ''Exilia'' Conrad, 1860* ''Chathamidia'' Dell, 1956: synonym of ''Exilia'' Conrad, 1860* ''Cyomesus'' Quinn, 1981: synonym of ''Latiromitra'' Locard, 1897* † ''Graphidula'' Stephenson, 1941: synonym of ''Exilia'' Conrad, 1860* ''Meyeria'' Dunker & Metzger, 1874: synonym of ''Metzgeria'' Norman, 1879* ''Mitraefusus'' Bellardi, 1873: synonym of ''Exilia'' Conrad, 1860* ''Okinawavoluta'' Noda, 1980: synonym of ''Latiromitra'' Locard, 1897* † ''Palaeorhaphis'' Stewart, 1927 : synonym of ''Exilia'' Conrad, 1860* ''Phenacoptygma'' Dall, 1918: synonym of ''Exilia'' Conrad, 1860* ''Surculina'' Dall, 1908: synonym of ''Exilia'' Conrad, 1860* † ''Zexilia'' Finlay, 1926 : synonym of ''Exilia'' Conrad, 1860
References
External links *  Stimpson W. 1865. ''On certain genera and families of zoophagous gasteropods.'' American Journal of Conchology, 1: 55-64, pl. 8-9