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Re: 'Kitchen science' reveals dinosaurs died in agony
The opisthotonic posture of vertebrate skeletons: postmortem
contraction or death throes?
Paleobiology, 33(2), 2007, pp. 201â226
In short, the evidence is largely empirical in that ctrolled "kitchen
science" experiments do not result in opisthotonic death poses in
extant ectothermic organisms, but do in endothermic ones.
Additionally, fossil mammals, pterosaurs, and dinosaurs (including
birds) produce such death postures, but other fossil taxa do not,
including long-necked taxa such as plesiosaurs.
Since opisthotonic death poses are only produced by damage (e.g. lack
of oxygen) to the central nervous system, they propose the mechanism
is that the cerebellum (which normally inhibits contraction) of
high-oxygen consumption animals (endotherms) are more susceptible to
oxygen starvation than that of low metabolic-rate organisms, whose
brains normally operate with lower levels of oxygen on a daily basis.
It looks like solid work to me, and is consistent with other data
including growth rates, increased pulminary capacity (air sacs in
saurischians), increased locomotor ability relative to more basal
archosaurs, and increased food-gathering and processing abilities (most
notably in ornithscians).
Wyoming Dinosaur Center
110 Carter Ranch Rd.
Thermopolis, WY 82443
(800) 455-3466 ext. 230
Cell: (307) 921-8333
From: Jura <firstname.lastname@example.org>
Sent: Wed, 6 Jun 2007 12:19 pm
Subject: Re: 'Kitchen science' reveals dinosaurs died in agony
Wow, that was...completely useless. Does anyone have
the actual title of the paper. I'd love to read the
reasoning behind why only "warm-blooded" creatures die
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