Radiolarian faunas from the Tobelo Foundation of the island of Buton, Eastern Indonesia

Rddiolarian faunas from the Tobelo Formation of Buton, Indonesia have been examined. The assemblages represent Tethyan faunas and j-ange from Early Cretaceous to Oligocene. One hundred and twenty eight species and four undetermined forms belonging to the spumellarians and nasellarians are systematically described and illustrated. One new subfamily and three new genera are proposed; they are the Spongoacanthinae Soeka, subfam. nov., Butonastrum Soeka, gen. nov., Discoconocaryomma Soeka, gen. nov. and Paraxitus Soeka, gen. nov.