IRMNG Taxon list
Ammonicera albospeciosa Rolán, 1992
Ammonicera angulata Sleurs, 1985
Ammonicera binodosa Sleurs, 1985
Ammonicera burnayi Rolán, 1991
Ammonicera chosenica Chernychev, 2003
Ammonicera circumcirra Rolán, 1992
Ammonicera extracarinacostata Sleurs, 1985
Ammonicera familiaris Rolán, 1992
Ammonicera fischeriana (Monterosato, 1869)
Ammonicera japonica Habe, 1972
Ammonicera lignea (Palazzi, 1988)
Ammonicera lineofuscata Rolán, 1992
Ammonicera minortalis Rolán, 1992
Ammonicera multistriata Rolán, 1991
Ammonicera nodicarinata Sleurs, 1984
Ammonicera nolai Rolán, 1991
Ammonicera oteroi Rolán, 1991
Ammonicera plana Simone, 1997
Ammonicera plicata Sleurs, 1985
Ammonicera robusta Rolán, 1991
Ammonicera rota (Forbes & Hanley, 1850)
Ammonicera rotundata (Palazzi, 1988)
Ammonicera san Rolán & Peñas, 2009
Ammonicera sculpturata Rolán, 1992
Ammonicera shornikovi Chernychev, 2003
Ammonicera tenuicostata Sleurs, 1985
Ammonicera vangoethemi Sleurs, 1984
Ammonicera verdensis Rolán, 1991
Ammonicera vladivostokensis Chernyshev, 2003
Ammonicerina rota (Forbes & Hanley, 1850) accepted as Ammonicera rota (Forbes & Hanley, 1850)
Ammonicerina simplex O.G. Costa, 1861 accepted as Omalogyra simplex (O.G. Costa, 1861)
Helisalia liliputia Laseron, 1954
Helisalia pallida Laseron, 1954
Helisalia sucina Laseron, 1954
Homalogyra atomus accepted as Omalogyra atomus (Philippi, 1841)
Homalogyra gemmulata Turton, 1932 accepted as Orbitestella gemmulata (Turton, 1932)
Omalogyra ammonitoides (Powell, 1940)
Omalogyra antarctica Egorova, 1991
Omalogyra atomus (Philippi, 1841)
Omalogyra bicarinata Suter, 1908 accepted as Zerotula bicarinata (Suter, 1908)
Omalogyra burdwoodiana Strebel, 1908
Omalogyra densicostata (Jeffreys, 1884)
Omalogyra discula Palazzi, 1988 accepted as Omalogyra disculus Palazzi, 1988
Omalogyra disculus Palazzi, 1988
Omalogyra fischeriana Monterosato, 1869 accepted as Ammonicera fischeriana (Monterosato, 1869)
Omalogyra fusca Suter, 1908
Omalogyra fuscopardalis Rolán, 1992
Omalogyra japonica
Omalogyra nodicarinata Sleurs, 1983
Omalogyra planorbis (Dall, 1927)
Omalogyra rota Forbes & Hanley, 1850 accepted as Ammonicera rota (Forbes & Hanley, 1850)
Omalogyra simplex (O.G. Costa, 1861)
Omalogyra taludana Castellanos, 1989
Omalogyra undosa Palazzi, 1988
Omalogyra vangoethemi Sleurs, 1983
Omalogyra zebrina Rolán, 1992
Retrotortina damara Rolán & Peñas, 2009
Retrotortina fuscata Chaster, 1896