Paleogeology

Paleogeology, Paleoclimate, in relation to Evolution of Life on Earth

Climate and Extinction

Pounds et al[2] defined an "extinction" as the time when a frog species was last observed by professional teams of herpetologists working in these regions. Most extinctions (78% to 83%) occurred in years that were unusually warm across the tropics. The likelihood that this correlation arose by chance is less than one in a thousand. Moreover, the observed patterns of extinction vary with altitude -- as do the effects of climate change.

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. . . stratifying since 10/06/06