No, roosters are not mammals. Roosters are birds, which is a group of vertebrates. They belong to another large group of mammals—birds. Mammal characteristics include a constant body temperature, milk production to nurse young, and the possession of hair. Birds have feathers, lay eggs, and c...
A large number of primitive mammal fossil skeletons discovered in the Triassic strata of South Wales, England, are representatives of the earliest mammals on the earth. Paleontologists named them Morganotherium and placed them in the subclass Eotherium and the order Stylodontia....
As early as the late Triassic, when dinosaurs had just entered the evolutionary stage, a group of small animals that were inconspicuous at the time differentiated from therodonts among therapsid reptiles. They were born at the wrong time, because in the long years from the Jurassic to the Cre...
Seals are pinniped mammals with streamlined bodies, short and smooth fur, and strong wind and cold resistance. It can not only live in the water, but also land and inhabit, feeding on marine life. It is good at swimming and diving. Its swimming speed is 20 to 30 kilometers per hour, up to 37 kilomet...
Mammals are a class of the vertebrate subphylum, commonly known as mammals. They are the most advanced animal group with the most complex body structure and functional behavior among vertebrates. They are named for their ability to secrete milk through the mammary glands to feed their young....
China's Neogene terrestrial strata are widely exposed. For example, the Linxia Basin in Gansu develops continuous strata from the Oligocene to the Pleistocene, covering the complete Neogene period and rich in mammal fossils. The rapidly evolving mammals are divided into An effective means to com...
There may be multiple versions of the story of the destruction of the world, and the extinction of life directly caused by an asteroid impact is only one of them. Were the massive climate changes that led to the extinction of the dinosaurs caused by volcanic eruptions? Or was it caused by an asteroi...