Tyrannosaurus rex

[tigerluver]

@Spalea  I believe Sue is no longer considered to be with certainty a female. The basis of the original conclusion is now considered too weak and for the same reason it seems, the paper describing the new giant T. rex refrains from assigning a sex completely. The sexual dimorphism and social dynamic touted during the early 2000s seems to be discarded as of late. The original conclusions seem to have made too many assumptions.

Considering the striking differences in the skulls, it's interesting both specimens are still considered to be of the same species. The differences seem as extreme if not more than that between the tiger and lion or polar bear and grizzly, for example. Scotty has a much more robust and stouter skull. Considering how diverse modern species are, maybe our classification of the dinosaurs is somewhat oversimplified. Reply