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When Dinosaurs Roamed America (sometimes shortened to When Dinosaurs Roamed outside of the United States) is a two-hour American television program (produced in the style of a traditional nature documentary) that first aired on the Discovery Channel on July 15, 2001. [1]
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 ...
Triceratops (/ t r aɪ ˈ s ɛr ə t ɒ p s / try-SERR-ə-tops; [1] lit. ' three-horned face ') is a genus of chasmosaurine ceratopsian dinosaur that lived during the late Maastrichtian age of the Late Cretaceous period, about 68 to 66 million years ago in what is now western North America.
Dinosaurs roamed New Mexico millions of years ago, and mysteriously died out 66 million years ago. ... compared with the three horns of Triceratops, ... It was the last known sauropod dinosaur in ...
Paleontologists have discovered a new mammal that lived with the dinosaurs in Colorado millions of years ago after unearthing a fossil in the northwest corner of the state.
The falling cost of computer-generated effects also has recently allowed the increased production of documentaries for television; the award-winning 1999 BBC series Walking with Dinosaurs, the 2001 When Dinosaurs Roamed America, the 2003 Dinosaur Planet, the 2009 Animal Armageddon, the 2011 Dinosaur Revolution, the 2011 Planet Dinosaur and the ...
Ceratopsidae (sometimes spelled Ceratopidae) is a family of ceratopsian dinosaurs including Triceratops, Centrosaurus, and Styracosaurus. All known species were quadrupedal herbivores from the Upper Cretaceous. All but one species are known from western North America, which formed the island continent of Laramidia during most of the Late ...
The oldest dinosaur remains in the eastern US are about 225 million years old. [55] So, dinosaurs had reached the east coast of the United States not long after they evolved in the first place. [56] Fossil footprints are the most common kind of early dinosaur fossil in the eastern United States. [57]