Paleontologists from Britain and China explain that life on land and in the ocean flourished during the medieval marine revolution, after the devastating mass extinction during the Permian.
Frontiers points to Earth Science that it was originally believed that the biosphere was recovered in the late Jurassic or Cretaceous. But by the end of the Permian period, Permian mass extinction, or Great Dying, 252 million years ago led to the extinction of 96 percent of marine organisms and 73 percent of terrestrial vertebrate species. The biosphere is believed to have recovered after more than 30 million years. And during the Triassic, rivalries began between crustaceans, mollusks, and fish, in the so -called “sea revolution” in middle life.
However, new data suggest that biosphere recovery occurred earlier, 5–10 million years after mass extinction. And these living organisms have changed their hunting methods and their ability to survive.
Researchers have found the remains of the extinct Saurichthys, a long -jawed predatory fish with sharp teeth that is one meter long and resembles a crane, in Triassic sediments. Some Triassic fish can crush mollusk shells, and some can jump and glide in water, similar to modern flying fish, helping them escape predatory fish.
The researchers understood that the sea revolution during the Mesozoic was accompanied by ongoing competitions between the ancestors of modern mammals and terrestrial birds during the Triassic, resulting in a change of shape from horizontal to vertical to hot blood. and covers the skin with hair or fluff. This means that mammals appeared during the Triassic, not during the Jurassic as previously thought.
Source: leech. Ro
Source: Arabic RT
