A new genus of entactiniidae (Radiolaria) from the Upper Permian of South China

Abstract

Four new species and one indeterminate species of radiolarians from the Changxiangian (Upper Permian) of southern Guangxi, South China are introduced. They all belong to one new genus: Megaporus n. gen. This new genus is characterized by two concentric spherical shells with pentagonal and hexago nal pore frames composed of thick but narrow bars, which is very similar in morphology to some genera within the Mesozoic subfamily Pantanelliinae PESSAGNO (1977), but differs from the latter in possessing initial spicules with-in medullary shell.