Credit: skeleton by Maurício Silva Garcia; photo and composition by Rodrigo Temp MüllerPaleontologists from the Universidade Federal de Santa Maria (UFSM) published a study in the scientific periodic Gondwana Research describing the new fossilized specimen.The oldest dinosaurs have been excavated from fossiliferous layers with approximately 233 million years from Brazil and Argentina. Furthermore, some older Argentinean deposits revealed remains of dinosaur precursors, which provide crucial data on the origin of "true" dinosaurs. These creatures lived approximately 236 million years ago and were small, with no more than 1 meter in length.Whereas the fossil record of dinosaur precursors is relatively...