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Diplodocus (/ d ɪ ˈ p l ɒ d ə k ə s /, [3] [4] / d aɪ ˈ p l ɒ d ə k ə s /, [4] or / ˌ d ɪ p l oʊ ˈ d oʊ k ə s / [3]) is an extinct genus of diplodocid sauropod dinosaurs known from the Late Jurassic of North America. The first fossils of Diplodocus were discovered in 1877 by S. W. Williston.
Diplodocus, depicted with spines limited to the mid-line of the back. Diplodocids were generally large animals, even by sauropod standards. Thanks to their long necks and tails, diplodocids were among the longest sauropods, with some species such as Supersaurus vivianae and Diplodocus hallorum estimated to have reached lengths of 30 meters (100 ft) or more. [3]
Diplodocoidea is a superfamily of sauropod dinosaurs, which included some of the longest animals of all time, including slender giants like Supersaurus, Diplodocus, Apatosaurus, and Amphicoelias. Most had very long necks and long, whip-like tails; however, one family (the dicraeosaurids ) are the only known sauropods to have re-evolved a short ...
Diplodocus restored with an upright posture, based on comparison with living animals, from Taylor et al., 2009. Sauropod neck posture is a subject occasionally debated among scientists, with some favoring postures closer to horizontal whilst others a more upright posture. Research has looked at various avenues of evidence and analysis including ...
Diplodocoidea is defined as all neosauropods more closely related to Diplodocus longus than Saltasaurus loricatus. The group is named after Diplodocus, its best known member. Other prominent dinosaurs contained in this clade include Apatosaurus, Supersaurus, and Brontosaurus. Diplodocoids are distinguished by a unique head shape, which displays ...
Galeamopus is a genus of herbivorous diplodocid sauropod dinosaurs.It contains two known species: Galeamopus hayi, known from the Late Jurassic lower Morrison Formation (Kimmeridgian age, about 155 million years ago) of Wyoming, United States, and Galeamopus pabsti, known from the Late Jurassic fossils from Wyoming and Colorado.
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David Gillette (third from the left on the back row, wearing an orange cap) and other paleontologists at Grand Canyon National Park, 2019. David Gillette (March 20, 1946 – February 10, 2025) was an American paleontologist best known for his discovery of the dinosaur Diplodocus hallorum in 1985, and more recently for his work studying Pleistocene megafauna such as glyptodonts.