Oh, dinausaures, those big nasty beasts !! Fortunately, our dinosaurs Pixel Art are pretty and are not bad. The dinosaurs form a clade of extremely diverse tetrapod vertebrates whose current representatives are the birds. It is therefore not unfair to say that some of them are melodious and very talkative. They lived on Earth in the Mesozoic era, that is, between 248 and 65 million years ago. They are sometimes called "giant reptiles" or "giant lizards", but wrong, because some, like the compsognathus, were no bigger than a chicken! Dinosaurs are said to be non-avian if one does not consider birds.