0
There are many differances between the two. Dinosaurs were warmblooded, whereas reptiles are coldblooded. Reptiles also have legs that come out at right angles to their body, and a unusual knee structure. Dinosaurs had leg and hip structures close to that of modern mamals in the case of the herbavores and birds in the case of carnivores.
What else can I help you with?
How many dinsaurus are mammals?
No dinosaurs were mammals, but reptiles. "dinosaur" means "terrible lizard." Though there may be a link between dinosaurs and modern birds.
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.
Did modern reptiles evolve from dinosaurs?
No, although modern reptiles and dinosaurs do share common ancestors that lived in the distant past (likely the Carboniferous epoch). Birds, however, evolved from dinosaurs in the Jurassic epoch.
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 ex stinkend?
Yes, all dinosaurs are extinct. But, their modern-day ancestors, reptiles and birds, live on.
How are reptiles different from dinosaurs?
Dinosaurs were a subset of reptiles but they were different from any modern reptile. Modern reptiles are cold-blooded animals with a fairly slow metabolism. They walk with their legs stuck out to the side except for snakes and some lizards which have no legs. They are covered in scales. By contrast dinosaurs walked with their legs erect directly beneath them. There is evidence that many dinosaurs were warm blooded and had active lifestyles. Some are now known to have been covered in feathers rather than scales. A number of dinosaurs such as velociraptor were much more like birds than like modern reptiles.
Are aligators dinosors?
No. While alligators are related to dinosaurs they are not dinosaurs.
How did dinosaurs carry their baby eggs?
They did not carry their eggs. Dinosaurs kept their eggs in nests just like modern birds and reptiles.
Is a utahraptor a reptile?
Technically yes. Utahraptors are classified as dinosaurs and therefore reptiles. However they had more in common with birds than with modern reptiles.
Are lizards the evolved version of a dinosaur just smaller?
No. Lizards evolved from a separate group of reptiles and, as far as reptiles go, are not closely related to dinosaurs. The modern "evolved form" of the dinosaurs is actually the birds.
Are dinosaurs closer to amphibians than to reptiles?
They are generally considered reptiles, though some think they should have their own class.
