Everyone knows that the most ferocious dinosaur is the Tyrannosaurus rex, but do you know what the world's largest dinosaur is? Its name is Zhenlong. As its name describes, the dragon is more than 40 meters long, weighs 130 tons, and is 18 meters tall, and each step is like a small earthquake.
Living between 162 million and 136 million years ago in the Late Jurassic Period, It is a subspecies of Diplodocus, along with Thunderosaurus, Mamenxiosaurus, Super dragon, and Brachiosaurus, which were among the largest dinosaurs on Earth at that time.
Such a huge figure, and at the same time a herbivore, Zhenlong, like Mamenxi Dragon, spends a lot of time eating every day. According to scientists, a Mamenxi dragon spends 23 hours a day to eat, and eats leaves all the time, in addition to the natural environment at that time was extremely dense and abundant, the current environment is difficult to meet the feeding needs of these behemoths.
Dinosaurs were not cold-blooded nor hot-blooded
Recently, scientists have found that dinosaurs are a unique reptile, they are neither cold-blooded nor hot-blooded animals, in fact, they are exactly in the middle of the metabolic range, completely different from other organisms. They require fewer calories and calories than mammals of similar size, but are more flexible than other reptiles
Ichthyosaur evolution is missing
For years, scientists have been puzzled by the evolution of ichthyosaurs, and it is only recently that paleontologists have revealed how and when ichthyosaurs entered the marine environment, and the key to discovering the missing link in the evolution of ichthyosaurs is Cartorhynchus, an amphibian similar to a seal whose existence proves that ichthyosaurs originally lived on land and spent most of their time in water.
Discover the oldest dinosaur to date
Previously, scientists believed that dinosaurs rose at the end of the Triassic period and soon proliferated to become the overlords of the earth at that time. However, archaeologists excavated and found a dinosaur species, The Parringtonian Sardosaurus, with a tail length of 1.5 meters, making it the oldest dinosaur species to date. The history of dinosaurs can be traced back 10-15 million years, and it lived with ancient crocodiles and other reptiles in the Middle Triassic period 240 million years ago.