Many small and medium sized theropod dinosaurs had feathers. These include troodontids, dromaeosaurs, oviraptorosaurs, Microraptor, and even some tyrannosaurs.
All dinosaurs are considered reptiles.
A dinosaur
The current scientific opinion is that some dinosaurs actually had rudimentary feathers.
Scientists believe that Ceolophysis wasthe first dinosaur
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.
No Dinosaur has fur. hello! It's a reptile it has scales. Many dinosaurs also had feathers.
Usually, you can only tell conclusively that a dinosaur had feathers if there are feather imprints with the dinosaur fossil. One exception is that fused bones at the end of the tail may suggest that the tail was meant to support long feathers, in which case the bones can suggest that there were feathers. Another example is if the bones of the forearm have attachment points for a bunch of ligaments other than the ligaments at the joints, the ligaments probably provided attachment points for feathers.
Scientists use mainly fossils.
A dinosaur's look is a mystery to everyone! Yes, even sciencetists! How did we know about dinosaur's colour is just a guess! A dinosaur could even have feathers!!!! Or either fur and have wings but cannot fly.
Dinosaur Train - 2009 Now with Feathers A Frill a Minute 1-7 was released on: USA: 18 October 2009
The first dinosaur discovered to have had feathers was Archaeopteryx. Later finds found that many other dinosaurs including Velociraptor, Yutyrannus, and Anchiornis are known to have had feathers.
Scientists consider birds a type of dinosaur. Birds are still alive and abundant.