The Ecology of the Cambrian Radiation - Andrey Zhuravlev - Chapter 18 ppt

... Anomalocaris, e.g., Vorwald 1982). Further re- marks on the evolution of arthropod predatory behavior are made below in the con- text of the evolution of arthropod ecology. 1 8- C1099 8/10/00 2:19 PM Page ... 1927. On the feeding mecha- nism of Nebalia. Transactions of the Royal Society of Edinburgh 55:355–369. Cannon, H. G. and S. M. Manton. 1927. On the feeding mec...

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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 ... close to the Precambrian -Cambrian boundary, and that at the base of the Tommotian) are associ- ated with widespread breaks in deposition. Further work is neede...

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... indicators of the climatic and environmental changes that occurred during the Neoproterozoic- Cambrian transition. They also appear to reveal the occurrence of a discrete cold period in the Cambrian: the ... Sinian. Together with increasing evidence for a renewed cold period in the Cambrian, the isotopic record suggests the unique nature of the period. On the bas...

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... typical of deltaic areas. In the prograde delta-front sequence of the Chapel Island Formation of the Nemakit-Daldynian of Avalonia, the higher-energy environments show a preponder- ance of vertical ... stratigraphy of the Cambrian- Ordovician phosphate-bearing Obolus Unit on the northwest of the Rus- sian Platform]. Leningrad: Nauka. Pratt, B. R. 1994. Possible pr...

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... quality of seawater, thereby allowing the radiation of di- verse phototrophic communities (Zhuravlev chapter 8; Burzin et al. chapter 10); how the appearance of framework-building organisms created ... theme of community considers the biotas in their ecologic context, from their di- versification to the development of planktonic, level-bottom, reef, hardground, and deep-w...

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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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... 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 and Cambrian. The southern ... [Facies and stratig- raphy of the Vendian and Cambrian of the western East-European Platform], pp. 24 – 33. Tallin: Academy of Sciences of Esto- nian SSR. Brasier, M....

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... 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 base of the Cambrian and the first Cambrian ... 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 Sta...

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... dy- namics of Devonian shell-rich mudstones. Palaeogeography, Palaeoclimatology, Palaeo- ecology 63:109–139. Peach, B. N. and J. Horne, 188 4. Report on the geology of the north-west of Suther- land. ... beds. DISCUSSION The Cambrian represents a critical point in the development of nearly all biofabrics. Near the base of the Cambrian, there was a significant shift...

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... that predetermined the great Ordovician explosion. In contrast to the Cambrian, the Or- dovician radiation resembles that of the Mesozoic. With the exception of the Bryozoa, 08-C1099 8/10/00 2:08 PM Page 180 BIOTIC ... analy- ses of these entities are needed. However, the diversity pattern of their Cambrian Flora is congruent with that of the Early Cambrian...

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