Omalogyra
Omalogyra is a genus of minute marine gastropod molluscs in the family Omalogyridae.
This genus includes the smallest gastropods, with adult sizes of 1 mm and even less.
Species
Species within the genus Omalogyra include:Omalogyra ammonitoides Omalogyra antarctica Egorova, 1991Omalogyra atomus - atom snailOmalogyra burdwoodiana Strebel, 1908Omalogyra densicostata Omalogyra disculus Palazzi, 1988Omalogyra fusca Suter, 1908 Omalogyra fuscopardalis Rolán, 1992 Omalogyra liliputia Omalogyra simplex Omalogyra taludana Castellanos, 1989Omalogyra undosa Palazzi, 1988Omalogyra zebrina Rolán, 1992;Species brought into synonymy:Omalogyra Vayssière, 1893: synonym of Ammonicera Vayssière, 1893Omalogyra planorbis : synonym of Palazzia planorbis Omalogyra rota Forbes & Hanley, 1850: synonym of Ammonicera rota Omalogyra atomus sensu Arnaud, 1972: synonym of Omalogyra antarctica Egorova, 1991 Omalogyra ausonia Palazzi, 1988: synonym of Palazzia ausonia Omalogyra bicarinata Suter, 1908: synonym of Zerotula bicarinata Omalogyra discula Palazzi, 1988: synonym of Omalogyra disculus Palazzi, 1988Omalogyra fischeriana Monterosato, 1869: synonym of Ammonicera fischeriana Omalogyra nodicarinata Sleurs, 1983: synonym of Ammonicera nodicarinata Omalogyra planorbis : synonym of Palazzia planorbis Omalogyra pulcherrima Brazier in Henn & Brazier, 1894: synonym of Liotella pulcherrima Omalogyra vangoethemi Sleurs, 1983: synonym of ''Ammonicera vangoethemi''