Currently, archaeologists found three kinds of mammals like squirrels new fossil species in Liaoning Province, China, which dinosaurs living in the same period, indicating that mammals like squirrels survive on Earth two hundred million years.
According to foreign media reports, at present, archaeologists found three kinds of mammals like squirrels new fossil species in Liaoning Province, China, which dinosaurs living in the same period, indicating that mammals like squirrels survive on Earth two hundred million years.
This finding implies that age mammals appeared earlier than previously expected 40 million years, their size close to mice, to provide more diversification important clues about the early evolution of mammals. Scientists believe that after these types of early mammals evolved into spawning monotremes, such as: platypus, marsupial mammals and humans and whales, including placental mammals.
Six well-preserved skulls and bones excavated fossils found belong to one extinct species – thief beast head, after the awareness of the people of species is limited to fossil teeth. American Museum of Natural History Meng Jin (transliteration), Dr. said: “For decades, scientists have questioned whether the thief beast mammal species Head Gang, before we know the species is based on the jaw bone fragments and teeth fossils alone, but Newly discovered archaeological samples remarkably well-preserved, confirmed that it looks very much like modern mammals. “
These three new species living in the Jurassic period 160 million years ago, dinosaurs living in the same period, at present, this latest research report published in “Nature” magazine recently published showed them from about 208 million years ago Triassic a common ancestor species evolved.
Scientists these three kinds of new species into a new species – “Euharamiyida”, their appearance is similar to a small squirrel, weighing between 28-280 grams, with a long tail and feet, suggesting that the arboreal creatures. Dr. Meng Jin noted that they good at climbing the branches, may be more than the time spent in a tree squirrel.
Their limbs can be well adapted to climbing branches, but is not suitable for running on the ground. Euharamiyida species is likely the main devour insects, nuts and fruits, their long strange teeth, the tooth crown has many protrusions.