Dinosaur 2

Let me introduce you to a dinosaur again.

This time is the first fish dragon, which is a large marine reptile resembling fish and dolphins. They lived in most of the Mesozoic era, first appeared about 250 million years ago, a little earlier than the dinosaurs, disappeared about 90 million years ago, about 25 million years before the extinction of dinosaurs. In the middle of the Triassic, the terrestrial reptiles that have not yet been determined today have gradually returned to the sea and evolved into a dragon, a process similar to the evolution of today's dolphins and whales. They are particularly widely distributed in the Jurassic. In the Cretaceous they were replaced by the plesiosaur as the highest aquatic carnivore.

Then there is the Stegosaurus, a giant dinosaur that survived on the four feet of the herbaceous animals of the late Jurassic. They are believed to live on the plains and live in groups with nomadic herbivores such as Snapdragon. It has a row of huge bone plates on its back and a dangerous tail with four spikes to protect against predators. It can be up to 12 meters long and 7 meters high and can weigh up to 4 tons.

Then there is the plesiosaur, which is a kind of reptile in the sea. The reptiles in the sea include marine crocodiles and ichthyosaurs. They evolved from land-based organisms and returned to life in the ocean. These medium-sized reptiles lived from the Triassic to the late Cretaceous. They must live in clean waters, mainly for the consumption of fish. Fossils confirm that they occur more often in the marine environment, and eat fish in addition to the nautilus. Paleontologists differed on the relationship between Plesiosaur and other marine species.

Followed by a triceratops, a genus of herbivorous dinosaurs of the genus Dragonflies, which were found in the late Maocene late Maastricht terraces in North America, about 68 million years ago to 6500. Ten thousand years ago. The Triceratops is one of the latest dinosaurs and is often used as a representative fossil of the Late Cretaceous. . There are currently two effective species: Terrorist Triceratops, T. Prorsus, but there are other genus named. The Triceratops is also one of the most famous dinosaurs and a very popular dinosaur in popular culture.

Finally, the thief, the thief meaning "thief", is a species of theropod dinosaur, living in Australia in the early Cretaceous. The length of the thief is 9 meters. The thief was originally named in 1932 by the German paleontologist Huuni according to the single bone he found. This bone was originally thought to have come from the hand of a beetle dinosaur of an uncertain genus; later the bone was thought to resemble the finger bone of the Avala Citron dinosaur. If the thief belongs to Awala Cilong, it will become the largest member of the division. But recent research shows that the thief may be the original virtual bone dragon, similar to Enron Barong.

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Lupu Middle School first day: QQ379