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Morphobank media number
M305314

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Brian Andres

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Brian Andres

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Null distribution of the number of environmental transitions generated by ten million randomizations of environmental occurrence for terminal branches in the phylogenetic signal test of terrestrial or marine occurrence for pterosaur species (mean = 36.36, median = 36, range = 31, and standard deviation = 2.81). Only one of these randomized trees equals the 19 environmental transitions in the original analysis (one-tailed p = 0.00000001, n = 10,000,000).

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August 12 2013 at 11:59:52

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