1. Gigantheron

• Description: A colossal reptile with a body as long as a submarine, featuring tough, armored skin and razor-sharp scales. Gigantheron has a spiked tail and powerful jaws capable of crushing any prey in its path.
• Size: 80 feet long, weighing 60 tons.
• Notable Feature: Known as the largest predator of the prehistoric oceans, it could easily attack massive whales and other gigantic marine creatures.

2. Velociryx

• Description: A predatory bird with wings as sharp as razors, long legs, and glowing eyes that can pierce through the darkness. Velociryx is an incredibly fast mover on both land and in the air.
• Size: Wingspan of 30 feet, length of 10 feet.
• Notable Feature: With its incredible speed and sharp talons, Velociryx was an efficient and terrifying hunter of the skies.

3. Thornacrus

• Description: A massive, armored herbivore with rows of sharp, thorn-like spikes running along its back and tail. Thornacrus used its powerful tail to defend against predators.
• Size: 50 feet long, weighing 40 tons.
• Notable Feature: Despite its peaceful nature, Thornacrus was nearly invincible, with its spiked armor deterring even the most fearsome predators.

4. Shadowdrake

• Description: A dragon-like creature that lurks in the shadows of dense forests, with dark, leathery wings and the ability to blend into its surroundings. Shadowdrake is both stealthy and powerful.
• Size: Wingspan of 40 feet, length of 25 feet.
• Notable Feature: Its ability to disappear into the darkness made it one of the most elusive and mysterious creatures of the prehistoric world.

5. Aquatitan

• Description: A gigantic amphibian that dominated the prehistoric swamps and lakes, with a long, serpentine body and webbed limbs for swift movement in water.
• Size: 60 feet long, weighing 30 tons.
• Notable Feature: Aquatitan was the undisputed ruler of its aquatic domain, capable of taking down large prey with its powerful jaws and agile movements.