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Apatosaurus is a member of the family Diplodocidae, a clade of gigantic sauropod dinosaurs. The family includes some of the longest creatures ever to walk the earth, including Diplodocus, Supersaurus, and Barosaurus. Apatosaurus is sometimes classified in the subfamily Apatosaurinae, which may also include Suuwassea, Supersaurus, and Brontosaurus.
Fossils of Brontosaurus are relatively uncommon whereas Apatosaurus is the second most common sauropod in the formation, after Camarasaurus. Apatosaurus and Brontosaurus may have been more solitary animals than other Morrison Formation dinosaurs. [ 115 ]
Numerous scientifically important fossils have been recovered from the quarry, including the most complete sauropod fossil ever found, the juvenile Camarasaurus specimen CM 11338, and the largest nearly complete dinosaur skeleton ever found, [16] the Apatosaurus specimen CM 3018, which was the specimen that led Douglass to discover the site.
This list of nicknamed dinosaur fossils is a list of fossil non-avian dinosaur specimens given informal names or nicknames, in addition to their institutional catalogue numbers. It excludes informal appellations that are purely descriptive (e.g., "the Fighting Dinosaurs", "the Trachodon Mummy").
In 1876, fossil excavation began at Dinosaur Ridge under the direction of Yale paleontologist Dr. Othniel Charles Marsh. [1] The first identified Stegosaurus fossils in the world were discovered here, and fossil bones found in the layers of rock here represent some well-known dinosaurs, including Apatosaurus, Camarasaurus, Diplodocus, and ...
Fossils of Tawa-like dinosaurs have also been found in South America, which has important indications about paleogeography. During the Early Jurassic Period, dinosaurs such as Dilophosaurus, Anchisaurus, Coelophysis (formerly known as Megapnosaurus), and the early thyreophoran Scutellosaurus lived in North America.
Earl Douglass with his hand on a Diplodocus specimen, Dinosaur National Monument (August 1922).. Earl Douglass (October 28, 1862 – January 13, 1931) was an American paleontologist who discovered the dinosaur Apatosaurus, playing a central role in one of the most important fossil finds in North America.
Reptile and amphibian fossils like Captorhinus are found nearby in other counties. [114] Such Permian remains are viable candidates for the fossils used medicinally by the Comanche, but local Jurassic and Cretaceous dinosaur remains like those of Apatosaurus, Saurophaganax, Sauroposeidon and Tenontosaurus are also candidates.