Nanotyrannus lancensis — long thought by many to be a teenage Tyrannosaurus rex — was in fact a fully mature, distinct species of smaller tyrannosaurid,...
Paleontologists have examined an exceptionally well-preserved, near somatically mature tyrannosaur skeleton from the Hell Creek Formation of Montana. Their...
Tyrannosaurs are among the most intensively studied and best-known dinosaurs. Despite this, their relationships and systematics are highly controversial....
In the early 2000s, the fossilized skeletons of two small tyrannosaurs were collected from the famous Hell Creek Formation of Carter County, Montana. Nicknamed...
A distinctive pattern of tooth marks on a 66-million-year-old tyrannosaur bone found in eastern Wyoming offers one of the best evidences yet that tyrannosaurid...
