[dinosaur] Size of Sue´s skull

[Poekilopleuron <dinosaurtom2015@seznam.cz>]

Good day,

I would like to ask, what is the exact lenght of FMNH PR2081 specimen skull? There are various data on the internet ranging from 136 to 145 (or even 150) cm. The same variation can be found in the values given for "Sue´s" femur - ranging from 131 to 136 cm. Which data are most exact? What causes these differences in estimates? Thank you very much, Tom

BTW, what was a probable population density of T. rex? Something like 5 adult individuals per square kilometer?