However there are a few problems with that. Some of the color schemes are pretty bizarre, for example the Iguanodon can become purple with star-shaped spots.
However, multiple factors make it clear this is not canon, in particular the inclusion of many non-Mesozoic extinct animals, like Dunkleousteus and Woolly mammoth. Sauropods can rear up on their hindlimbs and use their necks to whip-attack enemies with, fish can spin around in a circle thus creating a whirlpool, turtles and armadillos can roll up into a ball and attack Sonic the Hedgehog-style, elephants can stomp the ground strong enough to create an earthquake and crack it, the list goes on.
Also, every animal requires to be fed larger amounts of food in order to level up whenever you evolve it and unlock its next evolutionary form. Adam Smith Hates Your Guts: The more you level up, the more expensive and harder everything gets.
