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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 ...
While the dinosaurs' modern-day surviving avian lineage (birds) are generally small due to the constraints of flight, many prehistoric dinosaurs (non-avian and avian) were large-bodied—the largest sauropod dinosaurs are estimated to have reached lengths of 39.7 meters (130 feet) and heights of 18 m (59 ft) and were the largest land animals of ...
2004 — Tiktaalik, a transitional form between lobe-finned fish and tetrapods is discovered in Canada by Ted Daeschler, Neil H. Shubin, and Farish A. Jenkins Jr. 2009 — Fossils of Titanoboa, a giant snake, are unearthed in the coal mines of Cerrejón in La Guajira, Colombia, suggesting paleocene equatorial temperatures were higher than today ...
F. H. Khakimov discovered a new dinosaur track site in Shirkent National Park, Tajikistan. [25] Zakharov and Khakimov reported the dinosaur track site discovered by the latter to the scientific literature. [25] 1964. Zakharov described the new ichnogenus and species Macropodosaurus gravis. He attributed it to a theropod, but these tracks are ...
The fossils, estimated to date back 90 million years, were part of a new dinosaur species previously unknown in East Asia. It’s unclear how long Port Island will remain closed to visitors.
Artistic restoration of Deinonychus preying on Zephyrosaurus. This timeline of dromaeosaurid research is a chronological listing of events in the history of paleontology focused on the dromaeosaurids, a group of sickle-clawed, bird-like theropod dinosaurs including animals like Velociraptor.
Dinosaurs were initially cold-blooded, but global warming 180 million years ago may have triggered the evolution of warm-blooded species, a new study found.
99 million years ago — after the Jurassic dinosaurs but before the T-rex — a 7-foot dinosaur with freakishly long feet, teeth serrated like a steak knife, and strong, sturdy hips burrowed in ...