The proposed new radiolarian subfamily Retentactiniinae (Entactiniidae) from the late Devonian (Frasnian) Gogo formation, Australia

摘要

This report will deal with the proposed new radiolarian subfamily Retentactiniinae from the Upper Devonian Gogo Formation, which is exposed in the Canning basin of Western Australia. The subfamily is characterized by a spongy shell and internal spic-ule with apophyses. It includes 9 genera and 44 species, of which 7 genera, Apophysisphaera, Plenoentactinia, Retentactinia, Retisphaera, Spongosphaera, Duodecimentactinia, Multientactinia and (including new species of Spongentactinia Nazarov 1975 and Provisocyntra Nazarov and Ormiston 1987) 38 species are new.