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Radiolarian fauna from the Chiungchussuan Shuijingtuo Formation(Cambrian Series 2) in Western Hubei Province, South China 被引量:1
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作者 Qiangfen MA Qinglai FENG +3 位作者 Wenchao CAO Lei ZHANG Yan YE songzhu gu 《Science China Earth Sciences》 SCIE EI CAS CSCD 2019年第10期1645-1658,共14页
Little is known regarding characteristics and evolution of radiolarian fossils in the early Cambrian due to its rarity and poor preservation. Here we report a new radiolarian fauna from the Cambrian Shuijingtuo Format... Little is known regarding characteristics and evolution of radiolarian fossils in the early Cambrian due to its rarity and poor preservation. Here we report a new radiolarian fauna from the Cambrian Shuijingtuo Formation corresponding to the Chiungchussuan Stage(Cambrian Series 2) in western Hubei, China. It contains over 300 radiolarian tests and these fossils belong to 4 morphotypes, including Paraantygopora porosa gen.et sp. nov., Braunosphaera sinensis gen.et sp. nov., Tetrasphaera? sp. and incertae spherical radiolarians. In taxonomy, Spumellaria predominates in the fauna and comprises 92% of the total. In shell structure, about 73% of all specimens are similar to the early Ordovician radiolarian fossils, with the shell walls characterized by perforated plate structures. The spherical radiolarians with latticed shells constitute another feature of the early Cambrian radiolarian fauna. The radiolarian fauna reported here contains many fossil specimens and covers different taxonomical taxa. These specimens usually consist of distinctive concentric multi-layers with complex structure. These characteristics indicate that Radiolaria had already thrived during the Cambrian Chiungchussuan Stage(Series 2, Stage 3), which may have occurred synchronously with the explosion and prosperity of macrobiota recorded in the strata deposited in shallower water condition. 展开更多
关键词 CAMBRIAN SERIES 2 RADIOLARIA Taxonomy Evolution South China CAMBRIAN explosion
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Extinction pattern and process of siliceous sponge spicules in deep-water during the latest Permian in South China
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作者 guiChun Liu QingLai Feng songzhu gu 《Science China Earth Sciences》 SCIE EI CAS 2008年第11期1623-1632,共10页
Diverse and abundant siliceous sponge spicules were found in the latest Permian beds, Dongpan and Ma’anying sections, South China, including 52 types and 85 forms. Further investigation on these spicules allows us to... Diverse and abundant siliceous sponge spicules were found in the latest Permian beds, Dongpan and Ma’anying sections, South China, including 52 types and 85 forms. Further investigation on these spicules allows us to understand extinction patterns and pro 展开更多
关键词 siliceous sponge SPICULES PERMIAN-TRIASSIC EXTINCTION PATTERN PROCESS South China
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