Most recent illustrations of dinosaurs show them covered in feathers. But did dinosaurs really have feathers?

Well, our researchers have determined all the feathered dinosaurs fall into two groups: they’re either birds that are called dinosaurs or they’re dinosaurs with filaments. Now a filament is not a feather—unless you accept the evolutionary definition of feather that includes anything they believe evolved into a feather.

When we get rid of the evolutionary assumptions, it’s obvious that birds and dinosaurs are totally different types of creatures. And the evidence we have so far is clear—dinosaurs didn’t have feathers.