A team of researchers recently discovered the world’s oldest heart, preserved in a fossilized prehistoric fish. The heart is 380 million years old. This will be helpful for researchers to understand the evolution of all vertebrate animals, including humans, over the years.
The discovery was made in Western Australia. Research published in the journal Science suggests that the heart belongs to a fish named “gogo”, which is now extinct. Professor Kate Trinjastic from Curtin University, Perth, was the lead scientist on the research team. He told the BBC that the team was very excited about it as it was the biggest discovery of his life.
She said, “We were in a crowd around the computer and we recognized we had a heart and we couldn’t believe it! It was incredibly exciting.” He said it was a “critical moment” in human evolution and that the heart proved that “we have evolved quickly”.
Typically, fossils reveal only bones while soft tissue is lost, but at this site in Kimberley, where Gogo Rock was formed, minerals have preserved many of the fish’s internal organs, including the liver, stomach, intestine, and heart. Are included. Professor Jong Long from Flinders University in Adelaide, Professor Kate’s colleague, said it was a “mind-shattering and jaw-dropping” discovery.
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The heart diagram of the gogo fish shows that it had two chambers, compared to the four chambers in the human heart. The gogo fish heart was an important stage in fish evolution because it was more efficient by having two chambers and more complex than the primitive fish heart. It turned the slow moving fish into the fast moving predator.
The gogo fish is the first in a class of prehistoric fish known as placoderms and the first to have jaws and teeth. Before placoderms, fish could only grow up to 30 centimeters long. However, placoderms can be up to 9 meters in length. They were the dominant life forms on Earth for 60 million years and existed millions of years before the first dinosaurs.
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