Herbivore sizing and stats
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My feedback would be that I'd prefer for small armored herbivores such as Crichtonsaurus, Kentrosaurus, Chasmosaurus, Chungkingosaurus, etc to not be almost as large as the giant species of those families.
A real Crichtonsaurus is estimated to have been 3.5m long, but in game it is 7m long. Most of the IRL tiny Stegosaurids are also hugely oversized in game. Same goes for the smaller ceratopsians (Chasmo, Styraco).
Actual stegosaur species size comparison:
http://www.prehistoric-wildlife.com/images/species/0/stegosaur-comparison.jpg
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I'd prefer if the largest armored herbivores had higher combat stats. Trike, Anky and Stego should be very lethal to a Ceratosaurus and a bit more dangerous to even the largest of predators. There's plenty of smaller armored herbivores which can be easier to kill.