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Re: Warm- vs. Cold-blooded Dinos
In the endo/ecto debate, does the increased temperature of the Mesozoic
play a part? Climatological data indicate that this was the warmest
period of earth history. It also had the highest carbon dioxide
atmospheric levels. (See June 1995 Geology for discussion of source of
Mesozoic atmospheric CO2).
It has been suggeted that there was little temperature stratification
between the equator and the poles during this time. Dinosaurs in polar
regions would still have been subject to the absence of light for 1/2
year although the temperatures may have been more mesic.
I have (have had) reptile pets. No matter how much time they spend on
their hot rocks, they are much more active when the ambient temperature
Ellin Beltz - firstname.lastname@example.org