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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.
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]
Possible teeth found in Maryland. Diplotomodon: Upper Cretaceous: carnivore: Dubious name for a species of tyrannosauroid from New Jersey, possibly a Dryptosaurus or a potentially new genus. Dryptosaurus: Upper Cretaceous: carnivore: Medium-sized tyrannosauroid from New Jersey. It was the first theropod unearthed in North America. Eotrachodon ...
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]
S. armatus is both the first Stegosaurus to be discovered and the type species. [42] Its type specimen is poorly preserved, incomplete, and lacks diagnostic features. [41] It has been considered dubious, with S. stenops as the neotype species for the genus. [41] S. stenops [14] Colorado, Utah and Wyoming, Brushy Basin member [16] [14] [9] [43]
1856 — Fossils are found in the Neander Valley in Germany that Johann Carl Fuhlrott and Hermann Schaaffhausen recognize as a human different from modern people. A few years later William King names Homo neanderthalensis. 1858 — The first dinosaur skeleton found in the United States, Hadrosaurus, is excavated and described by Joseph Leidy.
A 2016 estimate put the number of dinosaur species living in the Mesozoic at 1,543–2,468, [24] [25] compared to the number of modern-day birds (avian dinosaurs) at 10,806 species. [26] Extinct dinosaurs, as well as modern birds, include genera that are herbivorous and others carnivorous, including seed-eaters, fish-eaters, insectivores, and ...