The Ecology of the Cambrian Radiation - Andrey Zhuravlev - Chapter 6 doc

... boundary is placed at the base of the Wang- konda Formation and at the base of the trace fossil–bearing sandstones of the Winulta Formation in the Stansbury Basin. The Precambrian -Cambrian boundary ... 1992. Ion-probe zircon dating of a mid-Early Cambrian tuff in South Australia. Journal of the Geological Society of London 149:185–192. Daily, B. 1972. The bas...

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... development of infauna (Brasier and Lindsay; Droser and Li; Crimes— chapter 13); how the Early Cambrian biota changed the quality of seawater, thereby allowing the radiation of di- verse phototrophic ... included, and there are data on biomarkers. COMMUNITY The theme of community considers the biotas in their ecologic context, from their di- versification to the devel...

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... as- pects—characteristics of the environment. Both these kinds of aspects can be seen in the Ordovician radiation (Droser et al. 19 96) . The pattern of their interaction is dis- cussed in this chapter. Change ... communities. Pa- laeontology 38:443–470. Zhuravlev, A. Yu., B. Hamdi, and P. D. Kruse. 19 96. IGCP 366 : Ecological aspects of the Cambrian radiation field me...

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... across the Proterozoic-Phanerozoic boundary. Journal of the Geological Society 149 :63 7 64 6. Crimes, T. P. 1994. The period of early evolutionary failure and the dawn of evo- lutionary success: The ... Lagerstät- ten: Their distribution and significance. Philosophical Transactions of the Royal Soci- ety of London B 311:49 65 . Conway Morris, S. 19 86. The community st...

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... evolution of other Cambrian metazoans, the ecology of Cambrian trilobites remains poorly resolved. This chapter summarizes current knowledge of the ecology of Cambrian trilobite species and their ... the ecologic evolu- tion of these fossils. Recent interest in the Cambrian radiation has been fueled by the redescription of Cambrian soft-bodied organisms...

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... radiation of di- noflagellates. Paleobiology 22:329–238. Goad, L. J. and N. W. Withers. 1982. The identification of 27-nor (24R )-2 4-methyl- cholesta-5,22-dien-3b-ol and brassica- sterol as the major ... triaromatic 2-methyl-24-ethylcholesteroid; 10, triaromatic 4-methyl-24-ethylcholesteroid; 11, gorgosterol and 4a-methylgorgosterol; 12, 27-norcholest- 5,22-en-3b-ol; 13, 24-norchol...

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... 1995). The prob- lem of relating the two scales is complicated by the fact that the base of the Tom- motian was taken as the base of the Cambrian at 570 Ma in Harland et al. 1990. Since then, the ... interval; the substantial revision to the age of the base of the Cambrian period and other early Paleozoic stratigraphic boundaries; and, of course, the...

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... in the late Precambrian–Early Cambrian Ara Forma- tion of Southern Oman. In A. H. F. Rob- ertson, M. P. Searl, and A. C. Ries, eds., The Geology and Tectonics of the Oman Re- gion, pp. 61 7 63 6. ... of the Innuitian Belt in the Cana- dian Arctic, which still await solution. There is no general agreement on the paleo- geographic boundaries of Siberia for the Vendian a...

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... bulging of the crust and transgression of the platform proceeded. Com- parison of the 87 Sr/ 86 Sr record of the Ediacarian -Cambrian with that of the Cenozoic (Derry et al. 1994) suggests that the ... eds., The Pre- cambrian- Cambrian Boundary, pp. 166 – 185. Oxford: Clarendon Press. Crimes, T. P. 1994. The period of evolution- ary failure and the dawn of...

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... above Varanger-age glacial deposits in New- foundland, Canada. Journal of Sedimentary Research 69 :789–793. Nicholas, C. J. 19 96. The isotopic evolution of the oceans during the Cambrian Ex- plosion.” ... supported by the Geological Survey of Finland and the Department of Geology of the University of Helsinki and is a contribution to IGCP Projects 319, 320, 366 , 36...

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