How do we know dinosaurs didn't have fur? Why are they shown like

Everything we thought we knew about T. rex is wrong

The reconstructions of T-Rex baffle me. Were their skins lizard-like or were they covered in furs or feathers? - Quora

Did dinosaurs have feathers and fur like animals do now, or were they really all reptiles? - Quora

Did Dinosaurs Really Have Feathers?

The Dynamic Diet of Dinosaurs - Science World

Dinosaurs: how our understanding of what they looked like keeps changing

Why did scientists think that dinosaurs had scales instead of feathers or fur? - Quora

Since some of the dinosaurs were reptiles, have paleontologists ever found skin from sheddings? - Quora

What we've been getting wrong about dinosaurs

How do we know dinosaurs didn't have hair? - Quora

How do we know which dinosaurs did and didn't have fur? - Quora

Why were there so many dinosaur species?