Subject:
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Re: Evidence of Warm Blooded Dinosaurs
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Newsgroups:
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lugnet.off-topic.fun
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Date:
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Mon, 24 Apr 2000 17:31:40 GMT
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Reply-To:
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JSPROAT@IO.COMavoidspam
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Viewed:
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364 times
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Jeff Stembel wrote:
> Anyone interested in Dinosaurs should check this out:
> <http://www.washingtonpost.com/wp-dyn/articles/A53547-2000Apr20.html>
Oh man, it's funny how the media is taking this as a bold new theory that is
just now seeing the light of day. Horner, Bakker et al. published their
thoughts on this stuff -- with much media fanfare -- ten years ago or so.
Much of the backstory in _Jurassic Park_ depended upon this theory. I did my
11th grade English term paper on this stuff in 1989. (I contend then as now
that dinos in general were decidedly *not* ectothermic. :-)
> Pretty cool, huh? :)
A four-chambered heart? You bet! :-, However, crocs have 4-chamered hearts,
yet their oxy-rich and oxy-poor blood is still mixed in a most inefficient
way. Add to that the fact that the alleged fossilied heart is from an
unidentified specimen. I'm not sure that the 4 chambers can really sway the
endothermic argument one way or the other just yet.
No, I still base my pro-endothermic opinion from the size and count of blood
vessels through the dino bones, from the enormous lung capacity they had, from
the fact that few juvenile dinos are present in the fossil record, and from
the sheer size that some of them grew to.
obnotherdinotopic: Brontosauri and related dinos probably gave live birth.
Many bronto nests have been found, but no eggs. Additionally, due to the size
of the embryonic bronto, the egg shell wouldn've had to been so thick that the
mom would've had to *jump* on it for the baby to hatch. ...Then again, that
could've been why they went extinct. :-,
Cheers,
- jsproat
--
Jeremy H. Sproat <jsproat@io.com> ~~~ http://www.io.com/~jsproat/
I think the mistake a lot of us make
is thinking the state-appointed shrink is our friend.
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Message has 2 Replies:
 | | Re: Evidence of Warm Blooded Dinosaurs
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| (...) The article, to me, seemed to be saying that this was the most conclusive evidence found yet... Of course, I could've misinterpreted it. :) (...) Unidentified specimen? It is from a Thescelosaurus... The best example yet... Also, see my post (...) (25 years ago, 25-Apr-00, to lugnet.off-topic.fun)
| | | Re: Evidence of Warm Blooded Dinosaurs
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| (...) Ichthyosaurs absolutely did (there's a famous fossil of an Ophthalmosaurus that died while giving birth and was somehow fossilized), so there's no reason that archosaurs didn't. Oh, regarding that end-of-the-sauropods argument, there are (...) (25 years ago, 25-Apr-00, to lugnet.off-topic.fun)
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