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MA McPeek, JM Brown - The American Naturalist, 2007 - journals.uchicago.edu

Clade age and not diversification rate explains species richness among animal taxa.

STEM and diversification

Brown

GSID: NOxBM7q7J64J

Excerpt

… Care must also be taken to distinguish stem groups from crown groups when evaluating … For example, stem group amphibians extend back to the beginning of the Carboniferous, ca…

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