Results 251 to 260 of about 69,323 (287)
Monopodial and Sympodial Growth Modes in the Colonial Graptolithina (Hemichordata, Pterobranchia). [PDF]
Evol DevMaletz J, Lerosey-Aubril R.
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Low oxygen but dynamic marine redox conditions permitted the Cambrian Radiation. [PDF]
Sci AdvAlexander RD +6 more
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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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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.
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1954
The description and classification of new material from the Upper Cambrian of the Llano uplift in Texas has provided the basis for a review of the whole problem of the oldest cephalopods. In the light of these discoveries it is possible to evaluate more critically the Cambrian fossils that have formerly been assigned to the cephalopods.
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The description and classification of new material from the Upper Cambrian of the Llano uplift in Texas has provided the basis for a review of the whole problem of the oldest cephalopods. In the light of these discoveries it is possible to evaluate more critically the Cambrian fossils that have formerly been assigned to the cephalopods.
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