There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
Regarding whether the females are much larger than the males is unknown, there's no conclusive demonstration of sexual dimorphism in Tyrannosaurus rex despite Larson's statements in his 2008 book. The only specimen which was discovered to be a female is the B-rex or MOR 1125 if what was discovered in its femur was indeed a medullary bone, and it is smaller than most adult Tyrannosaurus rex specimens.