There are many special dinosaur types, among which there are two kinds of dinosaurs attracting the people’ s eyes, that is the spinosaurus dinosaur and Dimetrodon dinosaur, from the photos displaying below, the similarity is the big back sailing, it is just like the sailing boat, the dinosaurs can keep the balance with the sailing.
Dinosaurs dominated the planet’s land surface from 200 million years ago until the big abrupt disappearance about 135 million years later. The vast span of time boggles the human mind, which took its present, when the first dinosaurs—small, lightweight, bipedal, and carnivorous—appeared in the Triassic, the first of three periods in the Mesozoic geologic era, the Earth was firstly intact one giant continent; during their Jurassic, split into two parts, namely Laurasia and Gondwana; and by the late Cretaceous the continents had something like their present shapes, though all were reduced in size by the higher seas. The world was becoming the one we know: The Andes and the Rockies were rising; flowering plants had appeared, and with bees. The Mesozoic climate, generally, was warmer than today’s, generating lush growths of ferns and cycads, and tree ferns close to the Poles; afterwards, plant-eating dinosaurs grew huge, and carnivorous, more information is to be continued.