The study of fossils, as from a T-rex
[DOC] [TLE] Newly Discovered Dinosaur Reveals How T. rex Became King of the ... [PAR] Mar 14, 2016 ... Paleontologists have long known from the fossil record that the family of 
dinosaurs at the center of the studytyrannosaurstransitioned from... [DOC] [TLE] About Tyrannosaurus rex | American Museum of Natural History [PAR] The first T. rex fossil was discovered by a curator from the American Museum of 
Natural ... Want to know more about how scientists study growth rings in bone?