The wall of the type specimens of “Sigmoilina” schaeferae Zaninetti, Altiner, Dager & Ducret, 1982, described from thin sections of the Norian-Rhaetian reef limestone of the Taurus Mountains (Turkey), originally interpreted to be porcelaneous imperforate, is micritized. In this study, the presence of coarse pseudopores is demonstrated in the specimens collected from the Rhaetian Dachstein-type reef limestone of Mt. Begunjščica (southern Karavanke Mts, northern Slovenia) and the new genus Decapoalina Gale, Rettori & Martini, is established to comprise this particular species.