Download Comparing the Geological and Fossil Records: Implications by A McGowan, A B Smith PDF

By A McGowan, A B Smith

The prior decade has witnessed a huge revival in makes an attempt to split biodiversity indications from biases imposed via sampling and the structure of the rock checklist. How huge an issue this poses to our realizing of biodiversity styles continues to be arguable, and new methods are being built to enquire this query. the following palaeobiologists with largely differing ways and pursuits discover the issues of extracting trustworthy details on biodiversity swap from a less than perfect geological checklist. themes coated variety from the applying of information-theoretic methods that establish directional causal relationships to an in-depth learn of ways geological biases may possibly impact our knowing of dinosaur evolution. a variety of new insights into the hyperlinks among the land, shallow-marine and deep-sea rock, and fossil documents are offered, making this quantity helpful to an individual within the Earth or existence sciences who needs to stay abreast of this dynamic and speedily evolving study area.

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Extra info for Comparing the Geological and Fossil Records: Implications for Biodiversity Studies (Geological Society Special Publication 358)

Example text

This variable was removed so that we could investigate GER residuals for the other variables in each geological period. As 2, but also omitting the mean age of origin. This model was also used to investigate GER residuals in each geological period, but without modelling out the effects of mean gap size and gap standard deviation. e. including all of the variables specified above) and removing non-significant terms one by one, highest P-value first. Within this constraint, interaction terms were removed first, followed by main effects, unless the non-significant main effect was part of a significant interaction.

Chemical Geology, 161, 225– 240. Raup, D. M. 1976. Species diversity in the Phanerozoic: an interpretation. Paleobiology, 2, 289– 297. Raup, D. M. 1977. Stochastic models in evolutionary paleontology. In: Hallam, A. ) Patterns of Evolution as Illustrated by the Fossil Record. Elsevier, Amsterdam, 59– 78. Raup, D. M. & Gould, S. J. 1974. Stochastic simulation and evolution of morphology: towards a nomothetic paleontology. Systematic Zoology, 23, 305– 322. Raup, D. , Gould, S. , Schopf, T. J. M. & Simberloff, D.

Siddall (1998) used randomization tests to demonstrate that raw MSM values were not biased by tree shape, but rather by tree size. Pol et al. (2004) carried out extensive testing of the MSM*, in addition to the GER and the SCI, to examine their sensitivity to tree shape, tree size and the number of possible ages of first appearance among terminal taxa. They employed the same randomization procedure used by Siddall (1998) but found that the indices seemed to be affected by all three parameters: the GER was found to be influenced by a marginally greater degree than the MSM*, but not as much as the SCI.

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