In the late Cretaceous period from 100 million to 65 million years ago, the dinosaur kingdom has entered its twilight period. But just as the end was approaching, many strange groups evolved in the dinosaur family. These new "actors" made the final scene of the dinosaur world extraordinarily brilliant.
Pachycephalosaurus
Pachycephalosaurs are a very unique group of these new "actors". The main feature that distinguishes them from other dinosaur groups is the abnormal swelling and thickness of the bones on the top of their heads. Therefore, scientists speculate that they are likely to be like goats. The males often head-butt each other, and the winner can be in the group. maintain a high social status.
The Pachycephalosaurus discovered in the Mongolian Plateau is one of the earliest representatives of Pachycephalosaurus.
The specimen of Palastosaurus only has a broken skull, but the thickness of the top of this skull, which is less than 13 centimeters high, reaches 10 centimeters! Such a peculiar skull can only belong to Pachycephalosaurus. Its function is probably to resist the huge impact force generated when violent collisions with each other, so that the brain and other organs of the head will not be damaged.
Scientists speculate that Pagocephalosaurus is 2 meters long and weighs less than 50 kilograms. It is a small species in the Pachycephalosaurus family.
Pachycephalosaurus lived on the Mongolian Plateau 80 million years ago. Their habitat is a dry, and sometimes desert, environment. Plant fossils found from the same period bear this out, as they are drought-tolerant types. However, the Gobi Desert on the Mongolian Plateau today is drier than it was in the era of dinosaurs. This is because the sea level at that time was higher than now, and more water vapor from the ocean could reach there to form rainfall. Therefore, the climate in the Gobi was wetter than now, and many shallow ponds or lakes could be formed during the rainy season.
animal tags：
you may also like
Judging from the fossils of giant carnivorous dinosaurs recently discovered by scientists, Tyrannosaurus rex's position as the "king of dinosaurs" has been greatly challenged. There are actually carnivorous dinosaurs that are larger and more terrifying than Tyrannosaurus rex. Now let’s rank...
The earliest hypothesis about dinosaur mating positions was proposed by a scholar named Halstead in 1975. However, due to his understanding at the time, he believed that dinosaurs, like birds, did not have penises and adopted cloacal kissing. He proposed that the male dinosaur would wrap its...
The current scientific community believes that the dinosaurs became extinct due to a meteorite impact about 66 million years ago. New research finds that although the smoke from this impact briefly cooled the Earth, the impact introduced a large amount of carbon dioxide into the atmosphere, c...
Dinosaurs were a group of reptiles that dominated land for more than 140 million years (more than 160 million years in some parts of the world). They evolved in different shapes and sizes, from the terrifying giant Spinosaurus to the chicken-sized Microraptor, and were able to survive in a va...
This hypothesis about the cause of the extinction of the dinosaurs believes that the culprit of the catastrophe at the end of the Cretaceous was not an asteroid but a comet. Some scientists believe that the sun has a companion star that rotates around it. Every 20 to 30 million years, this co...
Hanauma Bay on the southern coast of Victoria, Australia is a famous source of dinosaur fossils on the Australian continent, but it is not easy to discover fossils here. Although fossils are often well preserved here, they are buried in hard sandstone, siltstone and mudstone and can only be u...
Dinosaurs have disappeared from the earth for a long time, but they have never been forgotten by people. They are still the most worthy of further exploration of the animal group. They roamed for an astonishing 160 million years. The documentary will take us on a wonderful journey through tim...
Dinosaurs always give people a ferocious impression, but some dinosaurs are also very beautiful. So we often imagine what would happen if this kind of creature returned to the earth. We probably don’t know the answer. Without further ado, let’s take you to see the nine most fascinating dino...
Email: jsset#163.com (change # to @) Please indicate your purpose of visit! Guangdong ICP No. 2022053326 XML| map| Chinese
