Sudden Extinction of the Dinosaurs: Latest Cretaceous, Upper Great Plains, U.S.A

Results of a three-year field study of family-level patterns of ecological diversity of dinosaurs in the Hell Creek Formation of Montana and North Dakota show no evidence (probability P < 0.05) of a gradual decline of dinosaurs at the end of the Cretaceous. Stratigraphic reliability was maintaine...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 1991-11, Vol.254 (5033), p.835-839
Hauptverfasser:	Sheehan, Peter M., Fastovsky, David E., Hoffmann, Raymond G., Berghaus, Claudia B., Gabriel, Diane L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Biological Evolution Cretaceous Cretaceous period Dinosauria Dinosaurs Ecology Endangered & extinct species Extinction Floodplains Fossils Geologic Sediments - analysis Geological facies Geology Mass extinction Mass extinction theory Minor Planets Montana North Dakota Ornithischia Paleontology Population ecology Prehistoric era Sandstones Saurischia Space life sciences Species extinction Taxa
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