Silesunio parvus (FOSSIL) Skawina & Dzik, 2011 † Poland, Krasiejów
Tihkia corrugata (FOSSIL) Sahni & Tewari, 1958 †
Tihkia karooensis (FOSSIL) (L.R. Cox, 1932 †) Zambia99 mm
Tihkia silesiaca (FOSSIL) Skawina & Dzik, 2011 † Poland, Silesia