The study of fossils, as from a T-rex
Tyrannosaurus rex fossils have been found in the following formations:... [DOC] [TLE] Dinosaur Shocker | Science | Smithsonian [PAR] Probing a 68-million-year-old T. rex, Mary Schweitzer stumbled upon ... rock-hard 
fossils tens of millions of years old may have remnants of soft tissues hidden ... 
study how the microscopic structure of dinosaur bones differs depending on how
... [DOC] [TLE] Chemistry supports the identification of gender-specific reproductive ... [PAR] Mar 15, 2016 ...