Zilchogyra hyltonscottae W.K. Weyrauch, 1965 Argentina, Tucuman
Radiodiscus iheringi (C.M.F. Ancey, 1899) Brazil
Radiodiscus kuscheli M.I. Hylton-Scott, 1957 Chile
Lilloiconcha laevigata B. Hausdorf, 2005
Radiodiscus lateumbilicatus W.K. Weyrauch, 1966 Argentina, Mendoza province
Trochogyra leptotera (A. de Rochebrune& J.F. Mabille, 1882)
Helicodiscus lirellus L.R. Hubricht, 1975 USA. Virginia
Lilloiconcha lopezi Araya & Aliaga, 2015
Radiodiscus magellanicus (E.A. Smith, 1881) Argentina, Tierra del Fuego
Radiodiscus microhelix F. Haas, 1951
Radiodiscus millecostatus H.A. Pilsbry& J.H. Ferriss, 1906 Costa Rica
Lucilla miocaenica (FOSSIL) M. Harzhauser & al.,2015 † Italy, Piemonte
Zilchogyra miocenica (FOSSIL) F.A.W. Miquel& Rodriguez, 2016 †
Helicodiscus multidens L.R. Hubricht, 1962 Tennessee
Helicodiscus notius L.R. Hubricht, 1962 Alabama
Helicodiscus nummus E.G. Vanatta, 1899 Indiana
Helicodiscus parallelus (T. Say, 1817) Missouri3,6 mm
Radiodiscus patagonicus (H.H. Suter, 1900) Argentina, Santa Cruz
Zilchogyra paulistana (M.I. Hylton-Scott, 1973) Brazil
Radiodiscus peruvianus A.J. Crawford, 1939 Peru, Huancavelica
Zilchogyra peterseni W.K. Weyrauch, 1965 Peru
Chanomphalus pilsbryi (H.B. Baker, 1922) Nicaragua
Radiodiscus pilsbryi M.I. Hylton-Scott, 1957 Brazil, Rio Grande do Sul
Zilchogyra pleurophora (FOSSIL) (S. Moricand, 1846 †) Brazil, Sao Paulo
Radiodiscus proameri H.B. Baker, 1930 Mexico, Veracruz
Radiodiscus promatensis F.A.W. Miquel, R. Ramírez& J.W. Thomé, 2004 Brazil
Helicodiscus punctatellus J.P.E. Morrison, 1942 Kentucky, Edmonson County
Helicodiscus ramsdeni H.A. Pilsbry, 1942 Cuba
Retidiscus reticulatus Á.L.M. da Fonseca& J.W. Thomé, 1995 Brazil
Radioconus riochcoensis A.J. Crawford, 1939 Brazil
Hebetodiscus riparbellii F.L. Giusti, 1976 Italy, Isola di Montecristo1,7 mm
Hydrophrea roemeri (FOSSIL) (A. Andreae, 1902 †) Italy, Piemonte
Helicodiscus salmonaceus H. Hemphill, 1890 Washington
Helicodiscus saludensis J.P.E. Morrison, 1937
Radiodiscus sanrafaelensis (FOSSIL) Turazzini& F.A.W. Miquel, 2014 † Argentina