The fossils included only a couple postcranial remains, though in the 1900s-1920s Carnegie crews at Dinosaur National Monument discovered dozens of Stegosaurus specimens in one of the greatest single sites for the taxon. This group is widespread, with members across the Northern Hemisphere, Africa and possibly South America.

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A sketch of a Stegosaurus forms an important plot point in the opening chapters of The Lost World by Arthur Conan Doyle. Although named by Marsh in 1887 (including the holotype specimen), the disarticulated bones were actually collected in 1879 by Edward Ashley at Como Bluff, Wyoming. He contends that they had insufficient width for them to stand erect easily in such a manner as to be useful in display without continuous muscular effort. Stegosaurus affinis, described by Marsh in 1881, is only known from a pubis and is considered a nomen dubium.

The teeth were variously attributed to a stegosaur, the theropod Majungasaurus, [63] a hadrosaur or even a crocodylian, but is now considered a possible ankylosaur.

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Buchholz (née Giffin) EB, 1990; Gross Spinal Anatomy and Limb Use in Living and Fossil Reptiles, from the Journal of Paleobiology, vol. The other, Stegosaurus sulcatus, was named based on a left forelimb, scapula, left femur, several vertebrae, and several plates and dermal armor elements (USNM V 4937) collected in 1883. armatus, and sinking Hesperosaurus and Wuerhosaurus into Stegosaurus, with their type species becoming Stegosaurus mjosi and Stegosaurus homheni, respectively. After the end of the Bone Wars, many major institutions in the eastern United States were inspired by the depictions and finds by Marsh and Cope to assemble their own dinosaur fossil collections. Sauropods dominated the region, and included Brachiosaurus, Apatosaurus, Diplodocus, Camarasaurus, and Barosaurus.The skull's low position suggests that Stegosaurus may have been a browser of low-growing vegetation. The other ornithischians possessed teeth capable of grinding plant material and a jaw structure capable of movements in planes other than simply orthal (i. Later in 1887, Marsh described two more species of Stegosaurus from Como Bluff, Stegosaurus duplex, based on a partial vertebral column, partial pelvis, and partial left hindlimb (YPM 1858) from Reed's Quarry 11, though the species is now seen as synonymous with Stegosaurus ungulatus. Some have suggested that plates in stegosaurs were used to allow individuals to identify members of their species. The Transformers toyline and related television series features four characters which can transform into stegosaurids: Snarl, Slugfest, Saberback and Striker.

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Many of the species initially described have since been considered to be invalid or synonymous with earlier named species, [5] leaving two well-known and one poorly known species. No other plates or spikes were found, and the entire front half of the animal appears not to have been preserved. A large, heavily built, herbivorous quadruped, Stegosaurus had a distinctive and unusual posture, with a heavily arched back, short forelimbs, head held low to the ground and a stiffened tail held high in the air. Stegosaurus is commonly found at the same sites as Allosaurus, Apatosaurus, Camarasaurus, and Diplodocus. There has been debate about whether the tail spikes were used for display only, as posited by Gilmore in 1914 [14] or used as a weapon.The model was based on Knight's latest miniature with the double row of staggered plates, [12] and was exhibited in the United States Government Building at the exposition in St. Their teeth were "not tightly pressed together in a block for efficient grinding", [92] and no evidence in the fossil record of stegosaurians indicates use of gastroliths—the stone(s) some dinosaurs (and some present-day bird species) ingested—to aid the grinding process, so how exactly Stegosaurus obtained and processed the amount of plant material required to sustain its size remains "poorly understood".

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Stegosaurus was the largest stegosaur, reaching up to 10 meters (33 ft) in length and possibly weighing up to 5,000 kilograms (5. Mayell, H, "Stegosaur plates used for identification", from National Geographic News, (25th May, 2005. Past the first few dorsals, the centrum of the bones become more elongate front-to-back, and the transverse processes become more elevated dorsal. Felch collected the skeleton throughout 1885 and 1886 from Morrison Formation strata at his quarry in Garden Park, a town near Cañon City, Colorado. saw the discovery of a 40% complete Stegosaurus skeleton in Rabbit Valley in Mesa County, Colorado by Harold Bollan near the Dinosaur Journey Museum.Other remains originally attributed to Stegosaurus are now considered to belong to different genera. Again under Lucas, Knight revised his version of Stegosaurus again two years later, producing a model with a staggered double row of plates. laticeps in 1986, [18] although others note that the material is non-diagnostic and likely synonymous with S.