Why reptiles are not considered dinosaurs but the birds are?

Question

The reptiles to me look exactly like dinosaurs, their skeleton resemble fossils and they are cold-blooded.

In: 1

Answer 1

Reptile-like creatures evolved into reptiles and dinosaurs, and dinosaurs later evolved into birds. So reptiles and dinosaurs are sort of cousins. As to why dinosaurs look like reptiles – the reason for that is because we have traditionally depicted dinosaurs as resembling reptiles, and the reason for that is because someone in the 19th century thought that they probably resembled reptiles. In fact, we don’t really know for sure what dinosaurs looked on the outside. There have been finds in recent decades which suggest that many dinosaurs had feathers, i.e. that they looked more like birds.