Jon Alan

Books
Utahraptor vs. Deinonychus Utahraptor vs. Deinonychus
Utahraptor vs. Deinonychus
2026
Styracosaurus vs. Sauropelta Styracosaurus vs. Sauropelta
Styracosaurus vs. Sauropelta
2026
Liopleurodon vs. Dunkleosteus Liopleurodon vs. Dunkleosteus
Liopleurodon vs. Dunkleosteus
2026
Kaprosuchus vs. Archelon Kaprosuchus vs. Archelon
Kaprosuchus vs. Archelon
2026
Dimetrodon vs. Arizonasaurus Dimetrodon vs. Arizonasaurus
Dimetrodon vs. Arizonasaurus
2026
Entelodon vs. Andrewsarchus Entelodon vs. Andrewsarchus
Entelodon vs. Andrewsarchus
2026