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西藏丁青地区晚三叠世 Carnian期放射虫动物群共描述 19属 3 5种 (7个未定种 ) ,归于 16科 (亚科 )中。以Capnuchosphaera,Palaeosaturnalis,Perispongidium,Spongostylus,Annulotriassocampe,Poulpus,Xenorum,Veghicyclia,Tetraporobrachia,Canoptum,Xiphotheca等属为主的这个动物群被命名为 Capnuchosphaera triassica组合带。由于 Capnuchosphaera属在全世界广泛分布 ,无论在特提斯生物大区还是环太平洋生物大区 ,以这个属为主的放射虫动物群已成为国际间 Carnian期至 Norian早中期放射虫地层学对比的重要依据
The Late Triassic Carnian Period larvae fauna in Dingqing, Tibet, collectively describe 19 genera and 35 species (7 undetermined species) and are classified in 16 families (subfamilies). This fauna, dominated by Capnuchosphaera, Palaeosaturnalis, Perispongidium, Spongostylus, Annulotriassocampe, Poulpus, Xenorum, Veghicyclia, Tetraporobrachia, Canoptum and Xiphotheca, is named Capnuchosphaera triassica. Due to the widespread distribution of Capnuchosphaera in the world, both the Tethys Bioaccumulator and the Pacific Rim Bioengineering Group have become radiolarian stratigraphic comparisons of the Carnian to Norian early and mid-term radioiodism Important reference