EditorialFragment of a jaw of the first Tyrannosaurus rex discovered. 67-65 million years. Upper Cretaceous. Maastrichtian. Natural History Museum. London. United Kingdom.
EditorialPeter Larson, whose excavation company has been at the forefront of the boom in dinosaur fossil sales, with a cast of a Tyrannosaurus rex named Stan at his museum in Hill City, S.D., Nov. 13, 2022. (Tara Weston/The New York Times)