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Reptiles evolved some 320 million years ago from amniote ancestors, specifically from advanced reptiliomorph labyrinthodons. They were among the first vertebrates to successfully sever their ancestral tie to water, as they developed impermeable skin and a mode of reproduction that did not depend upon a body of water (internal fertilization coupled with the amnion, a semi-permeable membrane that protects the embryo in the egg and allows for an exchange of gases such as oxygen and carbon dioxide, allow the developing animal to breathe).

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14y ago

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Related Questions

Where did mammals evolve?

uhm, the earth?


Which type of critter did birds and mammals evolve from?

Birds and mammals both evolved from reptiles.


What reptiles did mammals evolve from?

A proto-mammal called the synapsid.


How do vertebrates evolve?

fish- amphibians- reptiles- birds -mammals


Did Placental mammals evolve from Marsupials OR from Reptiles?

Marsupials, because Reptiles have never been mammals and have always had their offspring in eggs outside of them.


Did mammals evolve from dinosaurs?

No. Mammals evolved from synapsid reptiles, a group not closely related to dinosaurs. Dinosaurs are more closely related to modern reptiles and birds than they are to mammals.


Why have dinosaurs not changes since before the time of dinosaurs?

Dinosaurs are extinct, buddy. I don't know what planet you live on, but they've been gone for a long time. And they did evolve, they turned into birds and mammals. Robert, they likely did not evolve into mammals, the mammals were already there. Although, I will give you credit on birds, due to the Archaeopteryx.


How do rabbits evolve into whales?

I would never have thought that rabbits had anything to do with whales let alone evolve into them. The only similarity that they share is that they are both mammals.


What did the lizard evolve into?

It is believed that snakes evolved from lizards. Lizards are an existing group of reptiles, of course, so did not 'evolve into' anything else--they are still here. While mammals and birds evolved from reptiles, they did not evolve from lizards.


How did killer whales evolve?

mammals evolved fat, lost tails, legs turned into fins etc.


Did early species of mammals evolve into smaller life forms?

Evolution produces both larger and smaller forms, depending on circumstances. This is true for any lifeform, and it is true for mammals.


Do any mammals have a fused backbone?

yes because all of the animals /mammals evolve another word is fused and everything has bones so they do. REMEBER to poo when you use the loo and join me too