Terminal Cretaceous Extinction
نویسنده
چکیده
A number of mechanisms have been proposed for the massive extinction of biota at the Cretaceous-Tertiary transition some 65 million years ago. Most of them were reviewed recently (I). Two additional mechanisms have been proposed, however, since that review was compiled-the "greenhouse" mechanism (2) and the Arctic spillover model (3). In the first of these. McLean has proposed that the large land and marine reptiles as well as the marine plankton (plant and animal) and many marine invertebrdtes became extinct at the end of the Mesozoic era because of an increase in
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