Fossils of the T. rex are increasingly becoming unavailable for research because of private collections, scientists warn in ...

A new fossil discovery is shedding light on a previously unknown Tyrannosaur species. This close relative of the ...

It's a finding that one Tyrannosaurus rex researcher calls "dispiriting and exasperating": More scientifically significant T.

The smaller specimen appears to be either a juvenile Tyrannosaurus rex or a Nanotyrannus ... He could also see a line of vertebrae leading toward a skull. It seemed likely the dinosaur’s ...