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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]
The size of the two Saurolophus species compared to humans Saurolophus is known from material including nearly complete skeletons, giving researchers a clear picture of its bony anatomy. S. osborni , the rarer Albertan species, was around 8.2–8.5 m (27–28 ft) long, with its skull 1.0 m (3.3 ft) long.
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 ...
The first fossils of Diplodocus were discovered in 1877 by S. W. Williston. The generic name, coined by Othniel Charles Marsh in 1878, is a Neo-Latin term derived from Greek διπλός ( diplos ) "double" and δοκός ( dokos ) "beam", [ 3 ] [ 5 ] in reference to the double-beamed chevron bones located in the underside of the tail, which ...
A new analysis offers clues to the mystery of this tiny oddball’s place on the human family tree. Newly discovered fossils shed light on the origins of curious ‘hobbit’ humans Skip to main ...
The poll, inspired by the release of the new 'Jurassic World' movie, asked, "Do you believe that dinosaurs and humans once lived on the planet at the same time?" Of the 1,000 people who were ...
The group contained hadrosaurids with a "males with median horn-like protuberance on the skull" and "very numerous teeth", found by Nopsca to be Parasaurolophus, Saurolophus, and Prosaurolophus. [3] In 1954, Charles Sternberg reevaluated the genera in Hadrosauridae, invoking the probability that Saurolophinae should be sunk into Hadrosaurinae.
An archaeological site in Ethiopia has revealed that a population of humans survived the eruption of Sumatra’s Mount Toba 74,000 years ago. One of the largest eruptions in Earth’s history ...