If you thought Chris Pratt successfully herding a pack of voracious Velociraptors with mere hand gestures was one of the more unlikely parts of recent mega hit Jurassic World (and yep, it was), try this on for size.

According to what we now know, nearly all carnivorous dinosaurs were actually covered in an outer layer of feathers, not scales, says RiAus in this contrasting look at how dinos have been portrayed on the big screen.

While Steven Spielberg and the makers of the original Jurassic Park were going off the best information they had at the time – it's amazing to think the 1993 original is well over two decades old now – it's a little disingenuous of the 2015 reboot to cling to our outdated, scaly notion of how these awesome creatures once looked, says RiAus.

'Scales equals scares' seems to be Hollywood's view on the matter, and as the third highest-grossing film of all time, you'd have to say Jurassic World made a clever commercial decision in not rocking the boat too much on dino imagery – even if it's perpetuating something we now know wasn't the case.

If you're not up to date on the latest dinosaur discoveries, RiAus walks you through what we now understand about dinosaur feathers, and how they were originally used for things other than flight, such as insulation and appearance.

While RiAus's video doesn't feature Chris Pratt leading a pack of Velociraptor warriors hurtling through the jungle on his motorbike – come to think of it, that bit was just a tad unrealistic too – it'll probably teach you more about how dinos really looked in about 10 minutes than what Jurassic World failed to explain in over two hours. Even though we loved that too.

But again: there's no Chris Pratt on motorbike. If you're down with that omission, we think you'll like it. (And learn bucketloads.)

And for some more on the science of Jurassic World, check out our story here, and watch this below: