IRMNG Taxon list
Diloma placinum F.H. Wind & P. Cepek, 1979 †
Diloma primitiva (Worsley, 1971) Wind & Cepek, 1979 †
Diloma primitivum (T.R. Worsley) F.H. Wind & P. Cepek †
Eiffellithus collis Hoffmann, 1970 †
Eiffellithus eximius (Stover, 1966) Perch-Nielsen, 1968 †
Eiffellithus gorkae Reinhardt, 1965 †
Eiffellithus multicostatus Gazdzicka, 1978 † accepted as Eiffellithus parallelus Perch-Nielsen, 1973 †
Eiffellithus parallelus Perch-Nielsen, 1973 †
Eiffellithus turriseiffelii (Deflandre in Deflandre & Fert, 1954) Reinhardt, 1965 †
Helicolithus anceps (Górka, 1957) Noël, 1970 †
Helicolithus stillatus Forchheimer, 1972 †
Helicolithus trabeculatus (Gorka, 1957) Verbeek, 1977 †
Tegumentum stradneri Thierstein in Roth & Thierstein, 1972 †