New microfossils from the Neoproterozoic (Sinian) Doushantuo Formation, Wengan, Guizhou Province, southwestern China

	New microfossils from the Neoproterozoic (Sinian) Doushantuo Formation, Wengan, Guizhou Province, southwestern China
	Yuan, XL ; Hofmann, HJ
刊名	ALCHERINGA
	1998
卷号	22 期号:3-4 页码:189-222
关键词	Sinian Doushantuo Formation China phosphorite acritarchs cyanobacteria bacteria biostratigraphy
ISSN号	0311-5518
文献子类	Article
英文摘要	Well-preserved, three-dimensional microfossils are reported from a 3.7 m thick black phosphorite bed in the Sinian Doushantuo Formation at Wengan Phosphate Mine, (Guizhou Province, southwest China. The diverse assemblage, observed in thin sections, comprises planktonic acritarchs, benthic cyanobacteria, bacteria, and thallophytes. Twenty one taxa are recognized, including 1 new genus and 4 new species. Acritarchs include Baltisphaeridium rigidum sp. nov., vulcanisphaera phacelosa sp. nov., Comasphaeridium magnum Zhang 1984, Cymatiosphaeroides yinii sp. nov., Dicrospinasphaera zhangii gen. et sp. nov., Echinosphaeridium maximum (Yin, 1987) Knoll, 1992, Ericiasphaera sp., ?Ericiasphaera sp., Hocosphaeridium scaberfacium Zang & Mialter, 1992, Meghystrichosphaeridium sp., Meghystrichosphaeridium wenganensis Chen & Liu, 1986, Polyhedrosphaeridium sp. The cyanobacteria and bacteria comprise Paratetraphycus giganteus Zhang, 1984, Gloeodiniopsis lamellosa (Schopf, 1968) Knell & Golubic, 1979, Globophycus sp., Myxococcoides sp., type A, Siphonophycus rugosum (Maithy, 1975) Hofmann & Jackson, 1994, Siphonophycus robustum (Schopf, 1968) Knell, Swett & Mark, 1991, Gunflintia sp., and a rod-like bacterium (type B). At least 6 distinctive acritarch taxa from the black phosphorite bed are also represented in the Pertatataka assemblage reported by Zang & Waiter (1992) in the Amadeus Basin of central Australia, suggesting a biostratigraphic correlation with the Pertatataka Formation, which underlies strata containing Ediacaran metazoans and overlies Varanger-age glacial sediments. Abundant bacteria-like coccoids and filaments preserved in the vesicles of many acritarch specimens attest to the presence of a thriving microbiota of decomposers within dead acritarchs, and a specimen of Thallophyca ramosa Zhang 1989 has well-preserved reproductive structures that comparable with those of the modem rhodophyte Bangia and the phaeophyte Fucus.
WOS关键词	PROTEROZOIC BYLOT SUPERGROUP ; FACIES MICROFOSSILS ; BAFFIN-ISLAND ; SVALBARD ; CANADA
WOS研究方向	Paleontology
语种	英语
出版者	GEOLOGICAL SOCIETY AUSTRALIA INC
WOS记录号	WOS:000076211300001
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/74936]
专题	中国科学院地质与地球物理研究所
通讯作者	Yuan, XL
作者单位	1.Acad Sinica, Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 2.Univ Montreal, Dept Geol, Montreal, PQ H3C 3J7, Canada
推荐引用方式 GB/T 7714	Yuan, XL,Hofmann, HJ. New microfossils from the Neoproterozoic (Sinian) Doushantuo Formation, Wengan, Guizhou Province, southwestern China[J]. ALCHERINGA,1998,22(3-4):189-222.
APA	Yuan, XL,&Hofmann, HJ.(1998).New microfossils from the Neoproterozoic (Sinian) Doushantuo Formation, Wengan, Guizhou Province, southwestern China.ALCHERINGA,22(3-4),189-222.
MLA	Yuan, XL,et al."New microfossils from the Neoproterozoic (Sinian) Doushantuo Formation, Wengan, Guizhou Province, southwestern China".ALCHERINGA 22.3-4(1998):189-222.