The evolution of body size, Cope's rule and the origin of amniotes.

@article{Laurin2004TheEO,
  title={The evolution of body size, Cope's rule and the origin of amniotes.},
  author={M. Laurin},
  journal={Systematic biology},
  year={2004},
  volume={53 4},
  pages={
          594-622
        }
}
  • M. Laurin
  • Published 2004
  • Biology, Medicine
  • Systematic biology
The evolution of body size in tetrapods is assessed using a database that includes 107 early stegocephalian species ranging in time from the Frasnian (Upper Devonian) to the Tatarian (Upper Permian). All analyses use methods that incorporate phylogenetic information (topology and branch lengths). In all tests, the impact of alternative topologies and branch lengths are assessed. Previous reports that raised doubts about the accuracy of squared-change parsimony assessment of ancestral character… Expand
Body size evolution in Mesozoic birds: little evidence for Cope’s rule
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It is demonstrated that Cope’s rule is not supported in Mesozoic birds by the available data, and body size evolution currently provides no insights into avian survivorship through the Cretaceous–Paleogene mass extinction. Expand
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Fossil data here provide the evidence to reliably document trends of both increasing and decreasing body size in several caniform clades, and including fossils in such analyses incorporates evidence of directional trends, thereby yielding more reliable ancestral character state reconstructions. Expand
Body Size Reductions in Nonmammalian Eutheriodont Therapsids (Synapsida) during the End-Permian Mass Extinction
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Evaluating temporal and phylogenetic distributions of body size in Permo-Triassic therocephalian and cynodont therapsids using a museum collections-based approach and time series model fitting on a regional stratigraphic sequence from the Karoo Basin, South Africa supports significant size reductions in the immediate aftermath of the end-Permian mass extinction. Expand
Testing for Depéret's Rule (Body Size Increase) in Mammals using Combined Extinct and Extant Data
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Recent progress in paleontological methods for dating the Tree of Life
TLDR
Progress has been made in compiling databases and supertrees incorporating paleontological data, in computing confidence intervals on the true stratigraphic range of taxa, and in using birth-and-death processes to assess the probability distribution of the time of origin of specified taxa. Expand
Cope's rule in cryptodiran turtles: do the body sizes of extant species reflect a trend of phyletic size increase?
  • D. Moen
  • Biology, Medicine
  • Journal of evolutionary biology
  • 2006
TLDR
Whether the phylogenetic distribution of body sizes in extant cryptodiran turtles is consistent with Cope's rule is examined, which finds no evidence for phyletic size increase, in contrast to the paleontological data that support the rule in a number of extinct vertebrates. Expand
Use of Paleontological and Phylogenetic Data in Comparative and Paleobiological Analyses: A Few Recent Developments
TLDR
This review presents a few methods of general interest to comparative biologists, such as phylogenetic independent contrasts (PIC) and variance partition with phylogenetic eigenvector regression and squared-change parsimony and PIC. Expand
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