Palaeobatrachus has been revealed in the Saurian artbook, although it's presence in the game remains unknown. The artbook mentions that Palaeobatrachus is too small from a dinosaur perspective, given the fact it hides in burrows, however their sounds reveal their presence in Hell Creek. This seems to suggest that the animal won't be physically present in the game, but it's vocalizations can be heard, specially at night, by the player.
- Palaeobatrachus, in reality, was absent in the Hell Creek Formation, however the formation itself also provides fossils from other frog genus, like Scotiophryne or Eopelobates.
|Animals of Saurian|
|Playable: Ankylosaurus • Anzu • Dakotaraptor • Pachycephalosaurus • Triceratops • Tyrannosaurus
Non-playable: Acheroraptor (originally playable) • Alvarezsaur • Anatosaurus • Axestemys • Basilemys • Borealosuchus • Brachychampsa • Brodavis • Casterolimulus • Chamops • Champsosaurus • Denversaurus • DePalma's Ornithuran • Didelphodon • Habrosaurus • Lepisosteus • Lonchidion • Meniscoessus • Mosasaurus • Ornithomimid • Palaeosaniwa • Pectinodon • Quetzalcoatlus • Thescelosaurus • Thoracosaurus • Toxochelys