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The earliest amphibians appeared approximately 250 million years ago.

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10y ago

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When did the earliest organisims appear on Earth?

Nobody really knows when the earliest organisms were on Earth. It was definitely more than a million years ago.


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Yes, the first ammonites lived during the Devonian Period. This was about 370 million years ago. The Devonian Period was a part of the Paleozoic Era.Dinosaurs did not appear until the Triassic, approximately 230 million years ago.HTH,Dr. C.


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When did the first Stegosaurus appear?

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When did nonflowering plants appear on earth?

Researchers have found that land plants had evolved on Earth by about 700 million years ago. This is much earlier than previous estimates of around 480 million years ago, which were based on the earliest fossils of those organisms.


When did trilobites and fish appear?

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