>>56138218NTA but if your entire field is studying all the creatures on the planet both in present and past terms, it's not that hard to fill in the gaps to get a "general" idea. Maybe the fins are wrong, maybe we'll discover that it had a four-pronged tail or something, but there's a pretty good chance it had a shark-like body. It's not just one big question mark. We're not gonna discover that it actually had a giraffe body with flippers instead of hooves. So yeah, all the images are made-up, but they're pretty good guesses.