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Re: Dinosaurs burrowed to keep warm
It occured to me that at least some folks think that one reason that mammals
made it thru the K/T event was that they burrowed and were kept free of the
fires, etc that would be part of the astroid collision. It was thus assumed
that dinos did not have this activity. Yet here we are commenting of just this
----- Original Message ----
From: Jeff Hecht <email@example.com>
Sent: Wednesday, March 21, 2007 6:40:19 AM
Subject: RE: Dinosaurs burrowed to keep warm
Interesting comments on a very interesting paper. I'll add a few things that
may not have come through clearly in my New Scientist report.
The burrow was about 2 meters long, and the bones were found at the bottom,
which seemed to expand into a den, but the bottom part had eroded away, so it's
not clear how big the den was. Still, it likely was big enough for the adults
to turn around in, avoiding the problem of backing out tail-first to find a
hungry theropod. :-)
Burrowing may explain other "bundles of bones" that paleontologists have found,
and excavators may have missed the evidence of a burrow.
There were bones of two half-grown juveniles in the bottom along with the
adult, indicating parental care. I'd guess that protecting young would be a
more important reason for burrowing than keeping warm in temperate climates.
Jeff Hecht, science and technology writer
Boston Correspondent, New Scientist magazine
Contributing Editor Laser Focus World
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