Jon Alan

Books
Pteranodon vs. Quetzalcoatlus Pteranodon vs. Quetzalcoatlus
Pteranodon vs. Quetzalcoatlus
2024
Megalodon vs. Mosasaurus Megalodon vs. Mosasaurus
Megalodon vs. Mosasaurus
2023
Elasmosaurus vs. Ichthyosaurus Elasmosaurus vs. Ichthyosaurus
Elasmosaurus vs. Ichthyosaurus
2024
Brachiosaurus vs. Argentinosaurus Brachiosaurus vs. Argentinosaurus
Brachiosaurus vs. Argentinosaurus
2024
Allosaurus vs. Giganotosaurus Allosaurus vs. Giganotosaurus
Allosaurus vs. Giganotosaurus
2024
Anaconda vs. Jaguar Anaconda vs. Jaguar
Anaconda vs. Jaguar
2019