you can go in two directions. Either Ice Age or Carnivores (or Monsters of the Deep but the approach is similar to Carnivores and the deck isn't quite as strong).
Ice Age is best as a Heimdall deck because the essential buffing card is a seal (oceans). Paleo naturally fits in a science card (teeth) and land (welw... the plant) anyway. With heimdall, that only leaves your choice of any history or space card. I use Hanging Gardens but you can pick whatever.
Carnivores is what to go for if you want to stay mono paleo. So the cards you would be adding are Tyrannotitan and all the epic/rare carnivores you can fit in as well as the carnivores you already have.
Both options keep the paleo buffs you have: Jurassic, Mapusaurus, Liopledron, Scimitar Cat.
you can go in two directions. Either Ice Age or Carnivores (or Monsters of the Deep but the approach is similar to Carnivores and the deck isn't quite as strong).
Both options keep the paleo buffs you have: Jurassic, Mapusaurus, Liopledron, Scimitar Cat.