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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 aren't dinosaurs mammals?
Dinosaurs and mammals evolved from two separate branches of reptiles. Mammals evolved from synapisid reptiles (all of which are not extinct) while dinosaurs along with the modern branches of reptiles evolved from sauropsids. So dinosaurs are more closely related to modern reptiles than they are to mammals. In more recent years scientist tend to agree that birds are in fact a surviving branch of dinosaurs.
Are dinosaurs the oldest mammals?
No. Dinosaurs were not mammals. They were more closely related to birds and modern reptiles than they were to mammals.
Are dinosaurs more closely related to amphibians or mammals?
Dinosaurs are more closely related to mammals. Both mammals and dinosaurs share a reptilian ancestor that they don't share with amphibians.
Are animals related to birds?
Birds are more closely related to reptiles than they are to mammals. Birds, reptiles, and mammals all belong to a group of vertebrates called amniotes, which split off from amphibians. Amniotes split into two groups soon after they evolved: true reptiles and synapsids. Mammals are the only living synapsids today. Dinosaurs branched off from the reptiles and birds then evolved from the dinosaurs.
Were dinosaurs egg laying mammals?
Dinosaur are not mammals. Mammals and dinosaurs evolved from completely different genetic lines. Birds are the closest and only living decedents of dinosaurs (except possibly a few rare species not known to science and only known to local tribal legend such as Mokele-Mbembe but this is not widely believed)
Is the giraffe related to lond necked dinosausurs?
Giraffe are not closely related to dinosaurs, the dinosaurs are reptiles, giraffe are mammals. But of course they are more closely related than are mammals and shellfish...
Why isn't there any dinosaurs now?
Actually, there ARE dinosaurs now; birds of all kinds are now classified as dinosaurs. They are actually more numerous than mammals!
Were seeds made before dinosaurs existed?
Plants with seeds first evolved 385 million years ago. That was more than 150 million years before dinosaurs evolved 231.4 million years ago.
How big were the first dinosaurs?
The first dinosaurs evolved from fishes and were no bigger than these days crocodiles.
Why are guinea pig mammals?
There is no reason other than that Guinea Pigs evolved to be mammals.
If chicken evolved from Tyrannosaurus Rex where did the Tyrannosaurus Rex and the rest of the dinosaurs came from?
Some people believe that dinosaurs evolved from other reptiles more than 230 million years ago. Other people believe that God put them here.
