Schleich dinosaurs make memorable gifts. We have a growing range, these are each beautifully painted and German designed. Reptiles who lived during the Mesozoic era, between 225 and 65 million years ago, are classified as what we now call Dinosaurs. They first appeared during the Triassic period 251 million years ago & then had to survive the Jurassic 200 million a go. It is estimated that they became extinct 65.5 million years ago.