They have scales
Sharks existed at the same time dinosaurs did. Sharks pre-date the dinosaurs by quite a bit. To get from sharks to dinosaurs: sharks - bony fish - lobe finned fish - lung fish - amphibians - reptiles - dinosaurs.
The Mesozoic Era is considered the Age of Reptiles. It lasted from about 252 to 66 million years ago and is characterized by the dominance of reptiles, including dinosaurs, pterosaurs, and marine reptiles.
No. While alligators are related to dinosaurs they are not dinosaurs.
Yes, dinosaurs did evolve from reptiles. They are part of a group called archosaurs, which also includes modern birds and crocodiles. Dinosaurs evolved from a group of reptiles called archosauriforms during the Triassic period.
The two main types of reptiles that existed in the Mesozoic Era were dinosaurs and pterosaurs. Dinosaurs were land-dwelling reptiles that roamed the Earth, while pterosaurs were flying reptiles that ruled the skies.
no, they are considered to be an actual type of reptile.
All dinosaurs are considered reptiles.
No. Dinosaurs are currently considered reptiles and are not related to mammals.
Birds, which are not just considered descendants of dinosaurs; they are dinosaurs.
well the dinosaurs are considered reptiles and they are the oldest so dinosaurs. hope this helped you
No. Dinosaurs evolved from reptiles. Birds evolved from dinosaurs.
What do you mean? Dinosaurs ARE ancient reptiles.
Dinosaurs are reptiles.
yes dinosaurs are a kind of reptiles they are big lizards
They are generally considered reptiles, though some think they should have their own class.
Your question is logically impossible. You must mean, "What prehistoric reptile is not considered by scientists to actually be a dinosaur?" The answer is that there were many mammal-like reptiles that predated the dinosaurs and were not dinosaurs. One example being Dimetrodon, which went extinct millions of years before the first dinosaurs evolved. Dinosaurs were not reptiles, but shared characteristics with both reptiles and birds. They were actually more like birds.
What most people call "flying dinosaurs" were actually pterosaurs, flying reptiles that were unrelated to dinosaurs. However, birds are considered by most scientists to be a clade of dinosaurs, and thus birds are "flying dinosaurs."