Let me begin this post by saying 3 things:

1. The dinosaur models are all provided by Wildcard Studios... all I do is re-size them.
2. I took each dinosaur model individually, compared them to a standard Ark human model, and resized the dinosaur based on that against larger historical reconstructions typically found in Wikipedia that compare the real dinosaur to a real human image.
3. Sometimes the way Wildcard did the models means that the dinosaurs might appear shorter, less longer or slightly wider than they might have in real life: Wildcard have taken some liberties to make the dinosaurs a little more bombastic to suit their game style or too fit into the Unreal collision and animation constraints: I have tried to scale the X, Y, Z of the capsule components to compensate.

If you really think a dinosaur is completely wrong or whacked, do let me know... but please provide a reference URL to a reputable website that shows a human and the dinosaur scaled accurately (preferable using a grid background) so that I can scale them accurately.

No URL with grid reference... no re-scaling!

P.S. No, Pteradons were not huge like they were in Jurassic Park! They were itsy bitsy flying reptiles that didn't have the advanced bone structure and feathers of modern day flying birds so carrying around your fully armored and geared-up ass was impossible! :)