Megalodon vs. Mosasaurus
Jon Alan
Triceratops vs. Stegosaurus
Jon Alan
Supercroc vs. Titanoboa
Jon Alan
Saber-toothed Cat vs. Dire Wolf
Jon Alan
Spinosaurus vs. Tyrannosaurus
Jon Alan
Giant Short-faced Bear vs. Woolly Mammoth
Jon Alan
Velociraptor vs. Pachycephalosaurus
Jon Alan
Pteranodon vs. Quetzalcoatlus
Jon Alan
Allosaurus vs. Giganotosaurus
Jon Alan
Brontotherium vs. Elasmotherium
Jon Alan