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Skeletal mount of the Tyrannosaurus holotype.. This timeline of tyrannosaur research is a chronological listing of events in the history of paleontology focused on the tyrannosaurs, a group of predatory theropod dinosaurs that began as small, long-armed bird-like creatures with elaborate cranial ornamentation but achieved apex predator status during the Late Cretaceous as their arms shrank and ...
Medium-sized tyrannosauroid from New Jersey. It was the first theropod unearthed in North America. Eotrachodon: Upper Cretaceous: herbivore: Hadrosaur from Alabama known from a nearly complete skeleton. Hadrosaurus: Upper Cretaceous: herbivore: First known non-avian dinosaur skeleton from the United States. Discovered in 1858 in Haddonfield ...
When T. rex was first discovered, the humerus was the only element of the forelimb known. [6] For the initial mounted skeleton as seen by the public in 1915, Osborn substituted longer, three-fingered forelimbs like those of Allosaurus. [4] A year earlier, Lawrence Lambe described the short, two-fingered forelimbs of the closely related ...
A rare fossil discovery marks the first time a tyrannosaur’s stomach contents have been found, a new study says. The young apex predator was a cousin of T. rex.
The only recorded find of a dinosaur fossil in Central America consists of a single femur discovered from Middle Cretaceous age deposits in Comayagua Department in the central part of Honduras. The fossil had been found in January, 1971 by Bruce Simonson and Gregory Horne, though it was later sent to the National Museum of Natural History, USA ...
Fossilized Dinosaur eggs displayed at Indroda Dinosaur and Fossil Park. This timeline of egg fossils research is a chronologically ordered list of important discoveries, controversies of interpretation, taxonomic revisions, and cultural portrayals of egg fossils. Humans have encountered egg fossils for thousands of years. In Stone Age Mongolia, local peoples fashioned fossil dinosaur eggshell ...
Tyrannosaurus, which roamed western North America, was one of the largest meat-eating dinosaurs. It appears this Tyrannosaurus was about 13-15 years old, two-thirds adult size, 25 feet (7.6 meters ...
A study published in the journal Scientific Reports on February 2, 2016, by Steve Brusatte, Thomas Carr et al. indicates that during the later Maastrichtian, Tyrannosaurus itself might have been partially responsible for the extinction of the other tyrannosaurids in most of western North America.