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The reptile clade includes the tuatara, lizards, snakes, turtles, crocodilians, and birds. Birds are considered reptiles now to make the phylogenetic tree monophyletic. Opposite to popular belief, the reptile clade is not entirely ectothermic; ( the absorption of external heat as the main source of body heat) birds are endothermic, capable of keeping the body warm through metabolism.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoI am not aware of any relation of amphibians to reptiles or birds except that they all are living animals. Birds and reptiles are another matter. There is plenty of evidence to back the theory that they share a common beginning. Birds have scales on their legs and feathers are an evolutionary adaptation of scales, which are also made from Keratin,as are hair, claws, finger & toe nails.Plenty of fossils have been found of some reptiles of the Dinosaur era, such as the Pteredactyl wich could fly very well.
Wiki User
∙ 11y agoBy a technicality. Many scientists agree that birds are the only surviving branch of the dinosaurs, and dinosaurs are still officially classified as reptiles.
Wiki User
∙ 14y agoA bird is not a reptile. Reptiles are cold blooded. Birds are warm blooded.
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Are penguins reptiles?
Penguins are birds, not reptiles.
Are birds reptiles or mammals?
Birds are nor mamals or reptiles. They are it's own category,
What kind of animals have endoskeletons?
mammals,birds,reptiles and amphibians.Any animal with its skeleton inside it.
Reptiles and birds are divided into two classes reptilia and aves What fossil evidence would be the BEST support for this division?
The crinoid stalks and blastoid heads are the common fossils that best distinguish the classes of birds and reptiles. They classify birds to class aves and reptiles to the class reptilia.
Are minnows birds or reptiles?
Neither. Minnows are fish.
Do birds eat reptiles?
There are certain birds that eat reptiles.
Are birds and reptiles amphibians?
No. Birds and reptiles are separate from amphibians.
Are reptiles and birds coldblooded?
Reptiles are cold-blooded and birds are warm-blooded.
Are penguins reptiles?
Penguins are birds, not reptiles.
Why do birds and reptiles lay eggs with shells but humans don't?
because birds and reptiles are reptiles and humans are mamals which makes use different! And birds are oviparous
Do birds and reptiles lay eggs?
Yes, birds and reptiles do lay eggs. Some reptiles, however, give birth to live young.
What are the simularities of reptiles and birds?
Birds are similar to reptiles. Both are vertebrates which lay eggs and breathe air.
Are birds and reptiles mammals?
N they are a seperate group like amphibians,mammals,reptiles,birds and fish
Are birds reptiles or mammals?
Birds are nor mamals or reptiles. They are it's own category,
Are hens reptiles?
No. They are birds.
Why did birds evolve after reptiles?
Because they can generate their own body heat - reptiles cannot and need a warm environment
Which reptiles are vertebrates?
Yes, mammals, birds and reptiles are all vertebrates.
