Type species: Semiclausa alternata d'Orbigny, 1853
This genus includes the species:
Semiclausa has been identified as a synonym of Idmonea (Walter, 1972), but this is ambiguous since the scope of Idmonea has been narrowed.
d'Orbigny, 1853 | Early Cretaceous Valanginian | Switzerland | WoRMS 1443387 | |
d'Orbigny, 1853 | Late Cretaceous Santonian | France | WoRMS 1443388 |