What did the early dinosaurs look like on Earth? The dinosaurs we are familiar with are not tall and mighty, fangs and teeth, or weird shapes, dexterity and agility, some are cruel and docile, and some are in large holes in the water. But the earliest dinosaurs were not so decent. They are of average appearance and small in size, and it is difficult to match them with the descendants of Wanghua Bamen who appeared later. It can be seen that the differentiation of dinosaurs was not very obvious at that time. So are there such dinosaurs as our animatronic dinosaur exhibition?
According to the data, the early dinosaurs refer to the Triassic dinosaurs. At that time, they had just evolved from the original ancestors. Due to their long age and the large and large horns of the dinosaurs were exposed, the number and species were very limited, so the fossils left were many. Early dinosaur fossils were found in Europe, Africa, and North and South America. Although there are few fossils, but rough impressions can be obtained from their remains, we have many dinosaur models. Some of them have a length of more than 20 meters, and some have only Dozens of centimeters. The most representative early dinosaur is the “Episaurus” found in the Andes in northwestern Argentina. It is a carnivorous dinosaur of 220 million years ago in the late Triassic. It is 12 cm long and weighs about 11 kg. Its hind legs are thick, its forelimbs are relatively short, and it walks on two feet; and it also has strong claws and sharp teeth. The claws are shaped like eagle claws. From the appearance, the robber dragon is a complete “robber mouth”.
Another well-preserved fossil of an early carnivorous dinosaur was collected in the Andes. It stands 1.801 meters tall, 5.1 meters long, and weighs about 111 kilograms when it is alive. It has thick front paws and unique jaws and serrated teeth suitable for hunting. It can be used to walk or run upright after use. It was the Herrera Dragon that lived 230 million years ago.
A fairly complete fossil of an early dinosaur was also unearthed in the United States many years ago. It is 2.5 meters long, hips up to one meter, and weighs about 90 kilograms when alive. It can also walk on four limbs and stand on its hind legs to simulate these dinosaurs. Is it popular with everyone? There are also such dinosaurs in the exhibition of animatronic dinosaurs. We not only have such dinosaurs, but also have the same fossil skeleton. It has a long neck and tail and is a herbivorous dinosaur. It is estimated that it may be those sauropods with unusually large bodies later. Ancestor type. Scientists have verified that this ancestral herbivorous dinosaur lived about 220 million years ago.
Early dinosaur fossils tell us how the body of dinosaurs grew from small to large, and how species changed from single to diverse. Another important fact is that the walking posture of the early dinosaurs has changed a lot, that is, the creeping crawling into a “walking” posture.