Thread:TheSpinoRex/@comment-4327179-20190602140805/@comment-36942163-20190603071228

Giant Uintatherium (a reference to the giant Uintatherium from The Last Dinosaur),

Giant Titanoboa,

Giant Theropod (a homage to Gorosaurus),

Giant Spinosaur,

Giant Ground Sloth

Giant Cave Bear

Giant Ankylosaur (a homage to Anguirus)

You should give these creatures sunken eyes and skeletal features like the skullcrawlers, to show that they have evolved to life underground.