The weight system has been remastered completely, instead of rigid weight classes, each dinosaur has a unique weight to it.
I'll edit the pages when I get a chance to.
Anyways, the maximum weights.
The weight system affects damage by dividing the Attacker weight by the victim weight. For example, a Shant is approximately 30% heavier than a Spino, so an attack will do 30% extra damage (I think). So a regular stomp would do 1,105 damage to a Spino, a headbutt would do 325, and a headshot stomp would do 2,340 damage.