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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]
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.
Maiasaura (from the Greek μαῖα, meaning "good mother" and σαύρα, the feminine form of saurus, meaning "reptile") is a large herbivorous saurolophine hadrosaurid ("duck-billed") dinosaur genus that lived in the area currently covered by the state of Montana and the Canadian province of Alberta.
Ferdinand Vandeveer Hayden, during expeditions near the Judith River in 1854 through 1856, discovered the very first dinosaur fossils recognized from North America. These specimens were obtained by Joseph Leidy , who described and named them in 1856; two of the several species named were Trachodon mirabilis of the Judith River Formation and ...
Potentially a close relative of Parasaurolophus [5] Agujaceratops: 2006 Aguja Formation (Late Cretaceous, Campanian) United States ( Texas) The type species was originally assigned to the genus Chasmosaurus: Ahshislepelta: 2011 Kirtland Formation (Late Cretaceous, Campanian) United States ( New Mexico)
Camarasaurus (/ ˌ k æ m ər ə ˈ s ɔː r ə s / KAM-ər-ə-SOR-əs) was a genus of quadrupedal, herbivorous dinosaurs and is the most common North American sauropod fossil. Its fossil remains have been found in the Morrison Formation, dating to the Late Jurassic epoch (Kimmeridgian to Tithonian stages), between 155 and 145 million years ago.
Nestled along the shores of the Long Island Sound, Hammonasset Beach State Park features 2 miles of pristine beachfront. From walking trails and a nature center to areas for fishing and camping ...
There is no evidence for live birth in Mosasaurus itself, but it is known in a number of other mosasaurs; [105] examples include a skeleton of a pregnant Carsosaurus, [105] a Plioplatecarpus fossil associated with fossils of two mosasaur embryos, [106] and fossils of newborn Clidastes from pelagic (open ocean) deposits. [105]