Ediacaria and Hiemalora- Disc-like Attachments of Benthic Organisms from the White Sea and Arctic Siberia (Russia)
Localities of Vendian soft-bodied metazoans from Arctic Siberia and Zimnii Bereg along the White Sea coast are well known, just as they are in the classic Australian sequences. Fossils occur on the Olenek Uplift in dark gray, thin-bedded limestones of the Khatyspyt Formation in the Khorbusuonka Grou...
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| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.561.2996 http://monash.edu/science/about/schools/geosciences/precsite/docs/workshop/prato04/abstracts/serezhnikova.pdf |
| Summary: | Localities of Vendian soft-bodied metazoans from Arctic Siberia and Zimnii Bereg along the White Sea coast are well known, just as they are in the classic Australian sequences. Fossils occur on the Olenek Uplift in dark gray, thin-bedded limestones of the Khatyspyt Formation in the Khorbusuonka Group, which crops out in the Olenek River Basin, along the Horbusuonka and Anabyl rivers. The Khorbusuonka Group can be correlated with Yudomian sediments using stromatolites, microphytolites and is dated radiometrically (Sokolov and Fedonkin, 1985). Fossils in the White Sea section are found primarily in fine-grained sandstones, siltstones and greenish clays that interfinger with cross-bedded siltstones and lenticular, cross-bedded sandstones. These strata have been dated as 553.3 +/- 0.3 Ma (Martin, et al., 2000), and they represent the Redkino Stage of the Vendian. Material from recently discovered new localities and well-preserved new specimens are significantly increasing the understanding of some Ediacaran taxa and changing views on their reconstructions. The best revisions of older reconstructions are made when the sample size for any one taxon is large and especially when that taxon is from one fossiliferous bed. T. M. Harris (1932) pioneered the use of this method of analysis based on his paleobotanic studies. This paper discusses new data on a number of taxa. |
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