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Bookmark or Share- Titanosaur | Size, Length, & Facts | Britannicatitanosaur, (clade Titanosauria), diverse group of sauropod dinosaurs classified in the clade Titanosauria, which lived from the Late Jurassic Epoch (163.5 million to 145 million years ago) to the end of the Cretaceous Period (145 million to 66 million years ago).
- Dinosaur | Definition, Types, History, Names, & Facts | BritannicaDinosaur, the common name given to a group of reptiles, often very large, that first appeared roughly 245 million years ago and thrived worldwide for nearly 180 million years. Most died out by the end of the Cretaceous Period.
- Tyrannosaurus rex | Description, Dinosaur, & Facts | BritannicaTurannosaurus rex, species of large predatory theropod dinosaurs that lived during the end of the Cretaceous Period (about 66 million years ago) known from fossils found in the United States and Canada dating to between about 80 million and 66 million years ago.
- Titanosaurs: 8 of the World's Biggest Dinosaurs | BritannicaThe largest dinosaurs of the era were the sauropods, a collection of four-legged herbivorous species that possessed long necks and tails. A sauropod subgroup called the Titanosauria contained the largest sauropods.
- Dinosaur - Extinction Causes, Evidence, & Theory | BritannicaDinosaur - Extinction Causes, Evidence, & Theory: The mass extinction of dinosaurs 66 million years ago remains a misconception; the fossil record shows that dinosaurs were already in decline during the late Cretaceous.
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