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Both insects and amphibians are thought to evolve during the Devonian Period.

The earliest known insect, Rhyniognatha hirsti, is thought to have evolved from arthropod ancestors around 400 million years ago during the Emsian age of the Lower Devonian Epoch.

The earliest known amphibian, Elginerpeton was thought to evolved from lung fish around 375 million years ago during the Frasnian age of the Upper Devonian. It is also thought to be the 1st tetrapod.

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Q: How many million years ago did insects and amphibians develop?
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Related questions

Have amphibians been around for 255 million years?

Yes, but for longer than 255 million years. The earliest amphibians evolved in the Devonian Period about 370 million years ago.


Approximately how many million years ago did the earliest amphibians appear?

The earliest amphibians appeared approximately 250 million years ago.


When fish first walked?

The first fish to develop legs and who mostly developed as the earliest amphibians, being able to live on and as well in water, came about around 370-400 million years ago.


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!


What insects have been around for 350 million years?

Cockroaches.


What insects have the longest lifespans?

The poopstain lives for a million years.


How long have amphibians been on earth?

Tetrapods (early amphibians) emerged in the fossil record some time int he lower Carboniferous, around 360 million years ago. Reptiles emerged later in the carboniferous, 320-310 million years ago, and were probably the dominant terrestrial fauna by the start of the Permian, 299 million years ago. If any period in geological history could be described as the age of the amphibians, it would be the lowere-to-middle Carboniferous.


When was the first amphibian?

360 million years ago, during the Devonian period. that's when the oldest amphibians were discovered. but the modern day amphibians were discovered 250 million years to 65 years ago, during Mesozoic Era.


What year was the first fish found?

500 million years of fish and proto-amphibians. -Melody Taylor (:


What happened 544-245 million years ago?

The Paleozoic Era began. Development of fish amphibians, insects and reptiles. Cambrian Period Ordovician period Silurian Period. Devonian Period Mississippian Period Pennsylvanian Period Permian Period


How long have amphibians lived on earth?

Amphibians have existed on Earth for over 300 million years. They are one of the oldest vertebrate groups, with their ancestors dating back to the Devonian period.


When did the first reptile appear?

300 million years agoThey appeared at the late Triassic period about 230 million years ago.