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Dinosaur shifts metabolic gears
Dinosaurs may have breathed with a diaphragm, allowing them to be as active as warm-blooded animals while remaining cold-blooded.
References:
Ruben, J.A., et al. 1999. Pulmonary function and metabolic physiology of theropod dinosaurs. Science 283(Jan. 22):514.
Further Readings:
Monastersky, R. 1997. Biologists peck at bird-dinosaur link. Science News 152(Nov. 15):310.
Sources:
Philip J. Currie
Royal Tyrrell Museum of Palaeontology
P.O. Box 7500
Drumheller, AB T0J 0Y0
Canada
James O. Farlow
Indiana University-Purdue University, Fort Wayne
Department of Geosciences
2101 Coliseum Boulevard East
Fort Wayne, IN 46805
John A. Ruben
Oregon State University
Zoology Department
Corvallis, OR 97331-2914
From Science News, Vol. 155, No. 8, February 20, 1999, p. 127. Copyright © 1999, Science Service.