The very first dinosaur fossil was a thigh bone found in the year 1787 by Dr. Caspar Wistar in the US. The study of Abelisaurus fossils gives us an image of the dinosaur and also tells us a lot about the Abelisaurus Characteristics.In early 19th Century, fossils found were formally recognized as the dinosaurs. Fossils of Abelisaurus include : Abelisaurus is known from a single skull that is 33 inches (85 cm) long.The dinosaurs first came into existence in the Triassic period of the Mesozoic era which was about 248 to 65 million years ago. The time period in which Abelisaurus lived is Cretaceous and was present 85-80 million years ago. Abelisaurus discovery is credited to J. F. Bonaparte and F. E. Novas. It was named and described in the year 1985-01-01 (1985).
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