The very first dinosaur fossil was a thigh bone found in the year 1787 by Dr. Caspar Wistar in the US. The study of Eosinopteryx fossils gives us an image of the dinosaur and also tells us a lot about the Eosinopteryx Characteristics.In early 19th Century, fossils found were formally recognized as the dinosaurs. Fossils of Eosinopteryx include : Almost complete individual.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 Eosinopteryx lived is Jurassic and was present 160 million years ago. Eosinopteryx discovery is credited to Godefroit. It was named and described in the year 2013-01-01 (2013).