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Approximately how many million years ago did the earliest amphibians appear?
Wiki User
∙ 9y ago
The earliest amphibians appeared approximately 250 million years ago.
Wiki User
∙ 9y 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.
How long ago did arthropods first appear?
Around 400 million years ago, in the Devonian, the age of sharks and early amphibians.
Was there amphibians before dinosaurs?
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.
Do amphibians have raidial symmetry?
Most amphibians are asymmetric. Although some appear to be symmetric.
When did the first amphibians appear?
6 billion years ago No, the Earth is only 4.6 billion years old. Amphibians appeared on Earth during the late Devonian period in the Paleozoic Era about 365 million years ago. Hope that helps!
When did the first Stegosaurus appear?
The earliest fossils belonging to the genus Stegosaurus are about 155 million years old. However, relatives of Stegosaurus, i.e., stegosaurs, first evolved at least ten million years ago. The earliest known stegosaur is Lexovisaurus, which lived in what is now England around 164.7 million years ago.
When did the first reptile appear?
300 million years agoThey appeared at the late Triassic period about 230 million years ago.
How did reptiles appear on earth?
They evolved from amphibians during the Carboniferous Period.
Did humans appear 60million years after the dinosaurs were extinct?
The earliest member of the human genus evolved 63.2 million years after the extinction of the dinosaurs. Modern humans didn't evolve until 65.3 million years after the extinction of the dinosaurs.
In which area did the earliest Neolithic society appear?
The earliest Neolithic societies appeared in the Fertile Crescent region of the Middle East, specifically in present-day Iraq, Syria, and Turkey. This area is also known as the cradle of civilization due to the development of agriculture and settled communities during the Neolithic period.
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.
What era did amphibians and reptiles appear?
Dinosaurs first appeared around 230 million years ago, during the Triassic period. This was part of the Mesozoic era, which covered almost all of dinosaur existence.
