![]() Models suggest Allosaurus could run up to 21 mph (33.8 kph), according to a 2007 study in the journal Proceedings of the Royal Society B. Each foot had three weight-bearing toes and an inner dewclaw. The teeth were likely easily lost during feeding and rapidly (and continuously) replaced, according to the 1976 analysis.Īllosaurus' massive body was supported by two powerful hind limbs and a large tail. The bones that formed the tip of the snout (the premaxilla) held five teeth, while the main tooth-bearing bones of the upper jaw (the maxilla) and the tooth-bearing bones of the lower jaw (the dentary) held between 14 and 17 teeth each. The dinosaur's mouth contained dozens of sharp teeth that were serrated at the front and rear edges. ![]() It also had ridges that ran along the top of the nasal bones to the horns. ![]() But unlike other theropods, it had a pair of small horns above its eyes, which were extensions of the lacrimal bones in the skull. Allosaurus Skeletal Reconstruction (Image credit: © Scott Hartman / All rights reserved)Īllosaurus 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.Īllosaurus had a short neck and a narrow, elongated skull, which was disproportionately large, similar to those of other big carnivorous theropods.
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