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Parasaurolophus (/ ˌ p ær ə s ɔː ˈ r ɒ l ə f ə s,-ˌ s ɔːr ə ˈ l oʊ f ə s /; meaning "beside crested lizard" in reference to Saurolophus) [2] is a genus of hadrosaurid "duck-billed" dinosaur that lived in what is now western North America and possibly Asia during the Late Cretaceous period, about 76.9–73.5 million years ago. [3]
Parasaurolophus, a crested hadrosaur.. Hadrosaurids, also commonly referred to as duck-billed dinosaurs or hadrosaurs, were large terrestrial herbivores.The diet of hadrosaurid dinosaurs remains a subject of debate among paleontologists, especially regarding whether hadrosaurids were grazers who fed on vegetation close to the ground, or browsers who ate higher-growing leaves and twigs.
The ornithopod family, which includes genera such as Edmontosaurus and Parasaurolophus, was a common group of herbivores during the Late Cretaceous Period. [1] Hadrosaurids are descendants of the Late Jurassic / Early Cretaceous iguanodontian dinosaurs and had a similar body layout.
Weishampel and others proposed a node-based definition for the Hadrosauridae: the descendants of the most recent common ancestor shared by Telmatosaurus and Parasaurolophus. [17] They found the hadrosaurs to be a natural group, contrary to Horner's 1990 arguments that the hadrosaur subfamilies were descended from different kinds of iguanodont. [10]
Lambeosaurines originated on the continent of Laurasia during the Late Cretaceous, being initially found throughout modern Europe and Asia.Around the Campanian stage, lambeosaurines of the tribe Corythosauria colonized the landmass of Laramidia (modern western North America) via Beringia and spread as far south as Mexico, radiating into a diverse array of a body plans, including famous taxa ...
Corythosaurus (/ k ə ˌ r ɪ θ ə ˈ s ɔːr ə s /; [1] lit. ' helmeted lizard ') is a genus of hadrosaurid "duck-billed" dinosaur from the Late Cretaceous period, about 77–75.7 million years ago, in what is now western North America.
The advent of agriculture roughly 11,500 years ago in the Middle East was a milestone for humankind - a revolution in diet and lifestyle that moved beyond the way hunter-gatherers had existed ...
This timeline tries to show dates of important historical events that happened in or that led to the rise of the Middle East/ South West Asia .The Middle East is the territory that comprises today's Egypt, the Persian Gulf states, Iran, Iraq, Israel and Palestine, Cyprus, Jordan, Lebanon, Oman, Saudi Arabia, Syria, Turkey, United Arab Emirates, and Yemen.