allosaurus weight in pounds

Paleontologists recongize three different species of Allosaurus, and they are A. fragilis (type … Among the largest predators, the Allosaurus was at the top of the food chain through the late Jurassic Period. Allosaurus was a typical large theropod, having a massive skull on a short neck, a long tail and reduced forelimbs. The horns were probably covered in a keratin sheath and may have had a variety of functions, including acting as sunshades for the eye, being used for display, and being used in combat against other members of the same species (although they were fragile). At the 2014 annual meeting of the Geological Society of America, Mossbrucker and his colleagues reported an allosaur pelvis bone stab wound that was in the conical shape of a stegosaur tail spike. Currently, there are four "unambiguous" North American Allosaurus species (A. fragilis, A. atrox, A. jimmadseni and A. lucasi), according to a 2014 study in the journal Volumina Jurassica. There was a ridge along the back of the skull roof for muscle attachment, as is also seen in, Inside the lacrimal bones were depressions that may have held glands, such as salt glands. The first Allosaurus was discovered in 1877 in Colorado and named by Othniel Charles Marsh. "Allosaurus Fragilis is the Lion of the Jurassic and the worst enemy of Stegosaurus and other dinosaurs like Camptosaurus. Inside the lacrimal bones were depressions that may have held glands, such as salt glands. Since 1980 estimates for Allosaurus have ranged between 700 kg (1,500 lbs) and 4,000 kg (8,800 lbs). These are the Lions of the Jurassic and the top predators of their age. Live Science is part of Future US Inc, an international media group and leading digital publisher. Future US, Inc. 11 West 42nd Street, 15th Floor, Allosauridae is one of four families in Carnosauria; the other three are Neovenatoridae, There are currently four valid and one undescribed species of, A new genus and species of furileusaurian (stiff-backed lizard) abelisaurid dinosaur being named. Major publications using the name “Megalosauridae” instead of “Allosauridae” include Gilmore, 1920, von Huene, 1926, Romer, 1956 and 1966, Steel, 1970, and Walker, 1964. In 1903, after Hubbell's death, the specimen was finally examined and turned out to be one of the most complete theropod skeletons unearthed to date. The name Allosaurus is derived from the Greek allos ("different" or "other") and sauros ("lizard"). Typical theropods that were thought to be related to Allosaurus included. Visit our corporate site. The skull had a pair of horns above and in front of the eyes. specimen (AMNH 680) estimated at 9.7 meters long (32 ft), and an estimated weight of 2.3 metric tons (2.5 short tons).As with dinosaurs in general, weight estimates are debatable. In his 1976 monograph on Allosaurus, James Madsen mentioned a range of bone sizes which he interpreted to show a maximum length of 12 to 13 m (39 to 43 ft). Description. Even though you've been around human beings all of your life, of all shapes and sizes, your guess is more likely than not to be inaccurate: you might estimate 200 pounds when the person actually weighs 300 pounds, or vice-versa. The T. Rex was also substantially heavier at 14,000 lbs compared to the allosaurus at 4,000 lbs. jimmadseni”, A. amplus, and A. lucasi are all known from remains discovered in the Kimmeridgian–Tithonian Upper Jurassic-age Morrison Formation of the United States, spread across the states of Colorado, Montana, New Mexico, Oklahoma, South Dakota, Utah, and Wyoming. Allosaurus size comparison. Please refresh the page and try again. Allosaurus fragilis, the best-known species, had an average length of 8.5 m (28 ft), with the largest definitive Allosaurus specimen (AMNH 680) estimated at 9.7 meters (32 feet) long, with an estimated weight of 2.3 metric tons (2.5 short tons). As with dinosaurs in general, weight estimates are debatable, and since 1980 have ranged between 1,500 kilograms (3,300 pounds), 1,000 to 4,000 kg (2,200 to 8,800 lb), and 1,010 kilograms (2,230 pounds) for modal adult weight (not maximum). Each foot had three weight-bearing toes and an inner dewclaw. There was a problem. You will receive a verification email shortly. Allosaurus was among the earliest dinosaur discoveries, and fossils are plentiful, making it a darling of paleontologists, as well as amateur dinosaur observers. The bulk of Allosaurus fossils found to date, however, come from the Morrison Formation, which is centered in Wyoming and Colorado. Allosaurus likely attained its full adult size by age 15 and lived up to 28 years old, a 2006 study in the Journal of Morphology found. A. fragilis is regarded as the most common, known from the remains of at least sixty individuals. There were also lower paired ridges running along the top edges of the nasal bones that led into the horns. The largest specimens may have rivaled T. rex in size, growing up to 39 to 43 feet (12 to 13 meters) long and 15 to 16 feet (4.5 to 5 meters) tall, according to a 1976 analysis of A. fragilis in the Utah Geological Survey Bulletin. Other dinosaur known at the time of its discovery in 1877 in and! 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