- Kramberger-Gorjanovic, 1889 †Eoceratoconcha
Newman & Ladd, 1974
Subfamily Megatrematinae Holt****s, 1982 Adna Sowerby, 1823
Megatrema Sowerby, 1823 Memagreta...
- Kramberger-Gorjanovic, 1889
Genus †Eoceratoconcha
Newman & Ladd, 1974
Subfamily Megatrematinae Holt****s, 1982
Genus Adna Sowerby, 1823
Genus Megatrema Sowerby, 1823...