Fish have existed on Earth for more than 450 million years, while mammals have existed on Earth for only about 200 million years. More than 27,000 species of fish have been identified on Earth, with an estimated 15,000 species not yet identified.
When was the first fish alive?
Vertebrates, especially the first fish, emerged during a Cambrian explosion about 530 million years ago, increasing biodiversity.
How long did the fish exist?
Fish. The first fish emerged about 530 million years ago and have evolved so long that they are by far the most diverse group of vertebrates today.
Are fish older than dinosaurs?
Since the extinction that wiped out dinosaurs 66 million years ago, fish have evolved and diversified, leading to the wide variety of fish species found today. 66 million years ago, it was a tough time to be a dinosaur (because they were all dead), but it was a great time to be a fish.
Is fish the oldest fossil?
Agnasa: An early jawless fish. The earliest vertebrate fossils of a particular relationship are fragments of the skin armor of a jawless fish (Agnasa, Heterostraci), approximately 450 million years old, in the Upper Ordovician of North America.
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How old is the fossil fish?How old is the first known fish?
