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).
Earth's climate warned during the tertiary period which allowed marine life to evolve and grasses evolved as well which meant grass eating mammals had a food source. Then the earths climate cooled facing a series of ice ages. Then 20000 years ago earths climate warmed again so ocean animals and land animals thrived.
The five classes of vertebrates (fish, amphibians, reptiles, birds, mammals) evolved in the following order: fish appeared first, followed by amphibians, then reptiles, birds, and finally mammals. Each class adapted and diversified to exploit different environments and ecological niches over millions of years.
Mammals have hair and nurse their young. That's what makes them mammals.
Yes mammals has jaws ,a dog has jaws lions has jaws and they are both mammals.
Earth's climate cooled, which caused ice ages. Thick glaciers formed. The level of the ocean fell by more than 100 meters. Then the climate began to warm. Continental glaciers melted. Mammals became common.
uhm, the earth?
Birds and mammals both evolved from reptiles.
A proto-mammal called the synapsid.
fish- amphibians- reptiles- birds -mammals
Marsupials, because Reptiles have never been mammals and have always had their offspring in eggs outside of them.
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.
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.
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.
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.
mammals evolved fat, lost tails, legs turned into fins etc.
Evolution produces both larger and smaller forms, depending on circumstances. This is true for any lifeform, and it is true for mammals.
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