New evidence has come to light overturning the new idea that dinosaurs had feathers, and were, as thought before it was thought that they had feathers, that they were scaly.
"For a long time," said palaeontologist Katie Boundary, "we thought that dinosaurs had scales. And to be fair, even after we found the feathered dinosaurs, we thought most of them were still scaly. However, around 1990 we discovered that some dinosaurs had feathers."
At first it was just the raptors that were thought to have feathers. Microraptor was thought to even use them for primitive gliding. Over the decades since, evidence was found for all raptors to have feathers, including the largest predator to have ever walked the land, Tyrannosaurus Rex.
"Actually, gigantisaur was the largest predator," corrected Boundary.
Looking in the rocks around the fossils, palaeontologists have found evidence of feathers across a wide range of dinosaurs.
"We have since found tar around the fossils as well," said Katie. "This has suggested a whole new interpretation."
Most palaeontologists interpret the tar as part of the rock, as a lot of dinosaurs died in tar pits.
"If a feathered dinosaur falls in a tar pit," said American palaeontologist, Montana Fields, "tar gets caught into the feathers and we see evidence of the tar around the fossils along side the feathers. This is the simple explanation. Occam's razor says that the simplest explanation is most likely correct."
Katie Boundary believes that this 'simple' explanation is not correct.
"It is not correct," said Katie. "I believe that a dinosaurs had a simple justice system. If you transgressed a dinosaur law, the offender was tarred and feathered. This has been preserved in the fossil record and shows how advanced socially the raptors were."
And Katie Boundary thinks that this means that dinosaurs didn't have feathers after all.