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The only recorded find of a dinosaur fossil in Central America consists of a single femur discovered from Middle Cretaceous age deposits in Comayagua Department in the central part of Honduras. The fossil had been found in January, 1971 by Bruce Simonson and Gregory Horne, though it was later sent to the National Museum of Natural History, USA ...
William Parker Foulke (1816–1865) discovered the first full dinosaur skeleton in North America (Hadrosaurus foulkii, [1] which means "Foulke's big lizard") in Haddonfield, New Jersey, in 1858.
This is a list of U.S. state dinosaurs in the United States, including the District of Columbia.Many states also have dinosaurs as state fossils, or designate named avian dinosaurs (List of U.S. state birds), but this list only includes those that have been officially designated as "state dinosaurs".
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 ...
The Hadrosaurus foulkii Leidy Site is a historic paleontological site in Haddonfield, Camden County, New Jersey.Now set in state-owned parkland, it is where the first relatively complete set of dinosaur bones were discovered in 1838, and then fully excavated by William Parker Foulke in 1858.
Apatosaurus (/ ə ˌ p æ t ə ˈ s ɔːr ə s /; [3] [4] meaning "deceptive lizard") is a genus of herbivorous sauropod dinosaur that lived in North America during the Late Jurassic period. Othniel Charles Marsh described and named the first-known species, A. ajax, in 1877, and a second species, A. louisae, was discovered and named by William ...
The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock that is found in the western United States, which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltstone and limestone and is light grey, greenish gray, or red.
It was an extremely important find: Hadrosaurus was one of the first nearly complete dinosaur skeletons found (the first was in 1834, in Maidstone, England), and it was clearly a bipedal creature. This was a revolutionary discovery as, until that point, most scientists had believed dinosaurs walked on four feet, like other lizards.