Latest Permian Entactinaria (Radiolaria) from southern Guangxi, China

摘要

A highly diverse and well-preserved latest Permian radiolarian fauna was obtained from muddy siliceous rocks and siliceous mudstoncs of the Dalong Formation, southern Guangxi, China. Specimens of the Order Entactinaria were selected for taxonomic study. Thirty-four species, among which were nine new species and twelve unidentified species, are included in this investigation. The nine new species are Entaainia wangi. Enuwliiiia minuta, Enicicliniti sashichii, Triloiiche textiles, Triaenosphaera variahilix, Triaenosphucni megucantlui, Pmvistxyntm densa, Prorisocyntra ormisroni and Wuyiu clongpanica. Permian species of the Family Spongentactiniidae Nazarov are reported first and the extinction pattern of the Order Entactinaria is discussed.