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Tyrannosaurus was not a fat boy or girl



I've placed a comment with the Hutchinson et al. PLoS One paper on 
Tyrannosaurus masses. 

Enjoy. 

It is becoming apparent that the uncertainties is restoring the power 
dynamics of extinct animals are so extensive that it is not possible to 
calculate 
whether or not adult Tyrannosaurus were slower or as fast than the 
obviously fast juveniles. If someone eventually comes up with power 
calculations 
estimating that an adult Tyrannosaurus could run 30-35 mph I will be happy but 
not sure how it is more reliable than those estimating only 20-25 mph. We 
are going to have to wait until time machines are available. I shall get to 
work on that. 

Also do not quite get the plot in Fig 6 in the Hutchinson et al. paper. It 
seems to show 10 yr old Tyrannosaurus not weighing anything. Odd. 

GSPaul</HTML>