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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.
Saurolophus was an important early reference for other hadrosaurs, as seen in the names of Prosaurolophus ("before Saurolophus") and Parasaurolophus ("near Saurolophus"). However, little additional material has been recovered and described. Instead, more abundant remains from Asia have provided more data.
Shaximiao Formation (Middle Jurassic, Bajocian to Callovian) China: An ornithischian of uncertain affinities Xiaotingia: 2011 Tiaojishan Formation (Middle Jurassic to Late Jurassic, Bathonian to Oxfordian) China: Well-preserved but inconsistent in phylogenetic placement. Some studies suggest a position as an early avialan [146] Xingtianosaurus ...
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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 ...
Golden eagle with a European hare. Tyrannosaur tooth marks are the most commonly preserved feeding traces of carnivorous dinosaurs. [8] It is usually not possible to identify tooth marks on bone made by small predatory dinosaurs due to similarities in the denticles on their teeth. [8]