Evolution: Evolutionary case histories from the fossil record
نویسندگان
چکیده
منابع مشابه
The Cosmic Evolution of Metallicity from the SDSS Fossil Record
We present the time evolution of the stellar metallicity for SDSS galaxies, a sample that spans five orders of magnitude in stellar mass (10 − 10 M⊙). Assuming the Bruzual & Charlot (2003) stellar population models, we find that more massive galaxies are more metal-rich than less massive ones at all redshifts; the mass-metallicity relation is imprinted in galaxies from the epoch of formation. F...
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■ Abstract Advances in taphonomy and stratigraphy over the past two decades have dramatically improved our understanding of the causes, effects, and remedies of incompleteness in the fossil record for the study of evolution. Taphonomic research has focused on quantifying probabilities of preservation across taxonomic groups, the temporal and spatial resolution of fossil deposits, and secular ch...
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Diversification rates are estimated from phylogenies, typically without fossils, except in paleontological studies. By nature, rate estimations depend heavily on the time data provided in phylogenies, which are divergence times and (when used) fossil ages. Among these temporal data, fossil ages are by far the most precisely known (divergence times are inferences calibrated with fossils). We pro...
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—This paper takes an alternative approach to the problem of inferring patterns of phenotypic evolution in the fossil record. Reconstructing temporal biological signal from noisy stratophenetic data is an inverse problem analogous to subsurface reconstructions in geophysics, and similar methods apply. To increase the information content of stratophenetic series, available geological data on samp...
متن کاملProblems with Evolution: Macroevolution and the Fossil Record
In my previous letter in response to Graham Mark's 3/16/95 guest editorial defending evolutionary theory, I pointed out some of the difficulties a materialist has in accounting for noumenal categories and, in particular, the embarrassing difficulty the materialist faces in accounting for coded, symbolic information comprising the genome of the first living organism. In this letter my focus will...
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ژورنال
عنوان ژورنال: Nature
سال: 1984
ISSN: 0028-0836,1476-4687
DOI: 10.1038/309114a0