Australian scientists reveal the evolution of fish and terrestrial animals: "open skylights" above their heads to breathe air – Australian News – Sydney
2014-01-25 10:44:54 Source: Australian website Alisonedit
Studies have always shown that terrestrial animals evolved from marine organisms. But how do the creatures in the ocean gradually adapt to breathing air? Researchers from Flinders University published an article in Nature Communications on the 24th, saying that fishes have opened a "skylight" on their heads and slowly adapted to breathing air.
Professor John Long of Flinders University said that after studying a species of Polypterus native to Africa, researchers finally figured out the secret that fish begin to adapt to breathing air.
Langen said: "Scientists in the early 19th century also had weird speculations about fish starting to live out of the water, saying that they might jump ashore out of breath, so they slowly grew limbs." Research is also limited to theory. It is unknown how fish evolved into land animals.
Recently, through a joint study with American scientists, Ron discovered that fish is likely to breathe through the hole above the head. Some 3.8 million-year-old fish fossils showed a hole in their skull. Researchers didn't know what this hole was for at first. Lang's research showed that this hole was the beginning of the evolution of fish into terrestrial animals. This allows them to breathe on land after leaving the water, and eventually use human noses and mouths.
Lang said that evolution takes a long time, and this may be just the first step in their evolution, and then they evolved into four-legged animals. "This is a good proof of how fish began to breathe out of the water. They are in the same blood as us, and eventually became humans today."