Most likely not as the term "reptile" on earth refers to a particular group of tetrapods on earth. If similar animals were discovered on another planet they might be referred to as "repiloids"or something to that effect by scientists. Though they might be called reptiles in everyday speech.
there are some mammals, reptiles,plants, and other things that will only live/survive there
20-50 years as per this article on Animal Planet - http://animal.discovery.com/guides/reptiles/turtles/slider.html.
There are about 8,225 species of reptiles in the world. About 9000 species of reptiles (Class Reptilia) have been discovered, although some may be subspecies or variants of known species.
Snakes belong to the group of animals known as reptiles.
reptiles. all lizards are reptiles
Chameleons don't look like reptiles but they are reptiles.
Yes, pterodactyl were from a branch of reptiles, and reptiles are vertebrates.
There are individual mammals that are bigger than individual reptiles, and there are individual reptiles that are bigger that individual mammals. However, the average size of all extant mammals is larger than the average size of all extant reptiles. Most reptiles are lizards and snakes, which are usually small. Only a few species of tortises, alligators, crocodiles, caimans, and very large snakes are big. Most mammals are bats, rodents, and shrews, which are usually small, but there are still hundreds of mammals that are big, including the biggest animal on the planet: the blue whale. There are more large mammals than there are large reptiles.
No reptiles are mammals.
reptiles
Dinosaurs are reptiles.