Biased reptilian palaeothermometer?

@article{Sniderman2009BiasedRP,
  title={Biased reptilian palaeothermometer?},
  author={J. M. Kale Sniderman},
  journal={Nature},
  year={2009},
  volume={460},
  pages={E1-E2}
}
  • J. Sniderman
  • Published 30 July 2009
  • Environmental Science, Geography
  • Nature
Arising from: J. J. Head et al. 457, 715–717 (2009)10.1038/nature07671; Head et al. replyPalaeotemperatures can be estimated from characteristics of fossils if their living relatives represent the full evolutionary potential of the larger taxon to which the fossil belongs. By drawing on observations that the body size of poikilotherms decreases globally with ambient temperature, Head et al. used the 13 m length of the newly described fossil boid Titanoboa cerrejonensis to estimate that the… 
Re-calibrating the snake palaeothermometer
Arising from: J. J. Head et al. 457, 715–717 (2009)10.1038/nature07671; Head et al. replyIn a recent study a new proxy for palaeoclimate reconstructions was proposed on the basis of a theoretical
A new Eocaiman (Alligatoridae, Crocodylia) from the Itaboraí Basin, Paleogene of Rio de Janeiro, Brazil
TLDR
The new taxon has a relatively small body size in comparison with other species of Eocaiman, a case paralleled by other Itaboraian reptilian groups (e.g. snakes), suggesting that this ecosystem provides critical data to test the relationship between reptilian body size and climate.
Head et al. reply
Replying to: J. M. K. Sniderman 460, 10.1038/nature08222 (2009); A. M. Makarieva, V. G. Gorshkov & B.-L. Li 460, 10.1038/nature08223 (2009); M. W. Denny, B. L. Lockwood & G. N. Somero 460,

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