380 million years!The oldest heart found in prehistoric fish fossils

Australian researchers found the heart in a prehistoric fossil, and it has a history of 380 million years ago. It is currently known as the oldest heart.

According to BBC reports on the 15th, researchers found the internal organs of petrochemicals when scanning the fossil, including the heart, liver, stomach, and intestine. The research report was published in the latest published "Science" magazine.

The fish belonging to this fossil was named "Gogo Fish" because it was found in the "Gogo" rock formation in the Western Australian wilderness area. Gogo Fish is a kind of extinct shield -skinned fish. Shield leather fish already has upper and lower jaws and teeth. It lives in Zhiliji to Pot Pot, and has lived on the earth for more than 60 million years, which is more than 100 million years earlier than the earliest dinosaurs.

Researchers said the discovery captured the key moment of the evolution of vertebrate pumping blood organs. The scanning results show that Gogo's heart has two ventricles, which are distributed up and down. Researchers say that such a heart structure is similar to humans, and evolving into such a structure allows the heart to work more efficiently. It is a key step that transforms a slow -moving fish into a fast -moving predator.

Researchers said that this is the oldest animal software currently known. When fossil formation, animal bones are usually only saved instead of soft tissue. However, this fossil found that the unique minerals of the field make the internal organs of the fish be preserved.

Source: CCTV News Guangzhou Daily · Xinhua City Editor: Peng Wenqiang

- END -