Start up a game with any dino, then go to the Esc menu and select Settings(Play As Dino). There you will see a button that says get all modded dino classes. Click that, then go back to the Esc menu an you should see a much longer list of available creatures.

same thing relaunch the game and only pc klick mod klick add mod top one again klick then enter

ok klick change dino

You have to "enablecheats password" whatever your password is. With that said, you have to hit ESC and then the settings for Play as Dino will pop up. After clicking the settings button you have several options from there, one being dino classes for Modded.