Results 301 to 310 of about 83,753 (334)
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Geological Society, London, Memoirs, 1992
Abstract Aspects of the history of the Cambrian System, and especially its usage in the British Isles, are discussed by Holland (1974). Rushton (1974), Cowie (1974) and Dhonau & Holland (1974) give general accounts of Cambrian stratigraphy in the British Isles, with extensive bibliographies, and the correlation is discussed by Cowie et al.
M. D. Brasier +2 more
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Abstract Aspects of the history of the Cambrian System, and especially its usage in the British Isles, are discussed by Holland (1974). Rushton (1974), Cowie (1974) and Dhonau & Holland (1974) give general accounts of Cambrian stratigraphy in the British Isles, with extensive bibliographies, and the correlation is discussed by Cowie et al.
M. D. Brasier +2 more
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Science, 2018
New fossils and sites are helping make sense of the mysterious flowering of animal life half a billion years ago.
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New fossils and sites are helping make sense of the mysterious flowering of animal life half a billion years ago.
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Crustaceans and the "Cambrian Explosion"
Science, 2001We noted with interest the report by Siveter et al . ([1][1]) of new phosphatocopid specimens showing soft-part preservation from the Lower Cambrian Comley Limestones, but we question some of the interpretations both in the report and in the accompanying Perspective by Fortey ([2][2]). First,
G E, Budd, N J, Butterfield, S, Jensen
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Morphological Disparity in the Cambrian
Science, 1992An analysis of the range of morphology among arthropods demonstrates that disparity among living arthropods is similar to that in Cambrian arthropods. The range of morphological design resulting from the Cambrian "explosion" has been overestimated, reflecting a tendency to separate as "problematic" taxa that cannot be accommodated in the classification
Briggs, DEG, Fortey, RA, Wills, MA
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2016
Based on trace-fossil evidence, the Cambrian explosion emerges as one of the most dramatic events in the history of the biosphere. Ichnologic data are highly valuable as an independent line of evidence with respect to the body-fossil record and molecular clocks to explore the nature of this event and the associated evolutionary innovations. In contrast
M. Gabriela Mángano, Luis A. Buatois
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Based on trace-fossil evidence, the Cambrian explosion emerges as one of the most dramatic events in the history of the biosphere. Ichnologic data are highly valuable as an independent line of evidence with respect to the body-fossil record and molecular clocks to explore the nature of this event and the associated evolutionary innovations. In contrast
M. Gabriela Mángano, Luis A. Buatois
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Geology Today, 1987
Bizarre soft‐bodied animals from the Cambrian, principally the Burgess Shale of British Columbia, are throwing new light on the major diversification of early metazoans. A distinctive range of new body‐plans hint at explosive rates of evolution, but the underlying mechanisms are still a matter for conjecture.
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Bizarre soft‐bodied animals from the Cambrian, principally the Burgess Shale of British Columbia, are throwing new light on the major diversification of early metazoans. A distinctive range of new body‐plans hint at explosive rates of evolution, but the underlying mechanisms are still a matter for conjecture.
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1994
Abstract The inaccuracy of palaeomagnetic data for the Cambrian period, which is dated about half a billion years ago, means that the knowledge of palaeo biogeography, palaeoclimatology, and geotectonics must be applied to its plate reconstruction. Scientists (Zoninshain et al. 1977; Ziegler et al. 1979; Scotese et al. 1979, 1990; Palmer
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Abstract The inaccuracy of palaeomagnetic data for the Cambrian period, which is dated about half a billion years ago, means that the knowledge of palaeo biogeography, palaeoclimatology, and geotectonics must be applied to its plate reconstruction. Scientists (Zoninshain et al. 1977; Ziegler et al. 1979; Scotese et al. 1979, 1990; Palmer
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1999
Until the mid-1980s, AI researchers assumed that an intelligent system doing high-level reasoning was necessary for the coupling of perception and action. In this traditional model, cognition mediates between perception and plans of action. Realizing that this core AI, as it was known, was illusory, Rodney A.
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Until the mid-1980s, AI researchers assumed that an intelligent system doing high-level reasoning was necessary for the coupling of perception and action. In this traditional model, cognition mediates between perception and plans of action. Realizing that this core AI, as it was known, was illusory, Rodney A.
openaire +1 more source