Sponge assemblage of some Upper Permian reef limestones from Phrae province (Northern Thailand)

Abstract

The sponge fauna of uppermost Permian reef or reefal limestones of the Phrae province in northern Thailand include representatives of hexactinellida, sclerospongea, “sphinctozoans”, and “inozoans". The “sphinctozoans” and “inozoans” are described in detail. Following taxa are new: “Sphinctozoans”: Phraethalamia tubulara n. gen., n. sp., Ambithalamia permica n. gen., n. sp. “Inozoans”: Bisiphonella tubulara n. sp., Solutossaspongia crassimuralis n. gen., n. sp. The genus name Belyaevaspongia nom. nov. is proposed for Polysiphonella Belyaeva, 1991 (in Boiko et al., 1991), non Polysiphonella Russo, 1981.