Article
The tempo of avian diversification during the Quaternary.
Philosophical transactions of the Royal Society of London. Series B, Biological sciences - 29 Feb 2004
Zink Robert M, Klicka John, Barber Brian R
Abstract excerpt
It is generally assumed that the Quaternary was a period of heightened diversification in temperate vertebrate organisms. Previous molecular systematics studies have challenged this assertion. We re-examined this issue in north temperate birds using log-lineage plots and distributions of sister-taxon distances. Log-lineage plots support earlier conclusions that avian diversification slowed during the Quaternary....
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