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Jurassic Park Errors
If people are going to criticize the scientific accuracy of JP,
it would be nice if they at least got their facts straight first.
For example, J. B. Bennington (in American Paleontologist, V. 4, no. 2,
pages 4-7, 1995) states that the scene where the raptor fogged up the
window in the door to the kitchen is in error, because "this implies both
a moistening of inspired air while in the respiratory system as well aas
a body temperature elevated well above that of the ambient environment-
both traits associated with endothermic (warm-blooded) animals",
apparently assuming (a) that dromaeosaurs were ectotherms, and (b), that
ectotherms cannot condition inspired air.
Sorry...both lizards and crocodiles are fully capable of warming
inspired air and exhaling it at a temperature below that of the body
and above that of external temps, so the raptor could have fogged up the
kitchen window, regardless of its physiologic status. See the refs below.
Murrish, D. E., & Schmidt-Nielsen, K. (1970) Exhaled air temperatures
and water conservation in lizards. Respiration Physiology,
v. 10, pp. 151-158.
Wolkomir, R., & Wolkomir, J. (1996). Alligator serenade. Wildlife
Conservation, v. 99, no. 1, pp. 22-29.
Dept. of PEHR
Western Washington University
Bellingham, WA 98225