Commercial collectors have discovered 2.4 times more T. rex fossils than public institutions since the early 1990s.

More than half of the world's scientifically useful T. rexes are in the hands of private or commercial owners, and not ...

Fewer Tyrannosaurus rex fossils are available for scientific research because wealthy people are purchasing them for private ...

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

Scientists have become concerned about the lack of Tyrannosaurus rex fossils for their research because wealthy individuals ...