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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.
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.
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 ...
During the late 1850s, the world's first reasonably complete dinosaur skeleton was discovered in New Jersey. [68] Joseph Leidy would name it Hadrosaurus. This was the first known dinosaur, the first dinosaur to be interpreted as two-legged, and the first to be mounted for exhibition in a museum. [69]
Washington is the latest state to have found their first dinosaur bone, it was recovered in 2012 but was not publicly identified until May 21, 2015. Some states contain rocks of the appropriate type and age to preserve dinosaur fossils, so the list of states with known dinosaur fossils is likely to increase in the future. [133] [134]
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.
The area where the Delaware hunters supposedly found the ancient bones is the same general region as the earliest dinosaur discoveries in North America. Local dinosaurs include ankylosaurs, Coelosaurus, Dryptosaurus, and Hadrosaurus. Other local reptile fossils include crocodilians and Tylosaurus. [17]
Later they would be recognized as dinosaur tracks. 1841 — Anatomist Richard Owen creates a new order of reptiles, dinosauria, for animals: Iguanodon, Megalosaurus, and Hylaeosaurus, found by Mantell and Buckland. 1841 — The first global geologic timescale is defined by John Phillips based on the type of fossils found in different rock layers.