Prehistoric Dinosaur Hub on Instagram: "Spinosaurus, Giganotosaurus, and Tyrannosaurus rex are often called the “Big 3” because they were among the largest carnivorous dinosaurs ever discovered. Spinosaurus was the longest, adapted to water; Giganotosaurus was one of the heaviest land hunters; and T. rex had the most powerful bite force ever measured in a land animal. Together, they represent the peak of predator evolution in the Mesozoic—giants from different times and continents, each ruling t

Prehistoric Dinosaur Hub on Instagram: "For a long time, Megalodon 🦈 was thought of as the undisputed apex predator of the Miocene and Pliocene oceans. At up to 18 meters long, it certainly dominated much of the seas. But recent studies suggest the picture was more complex. Megalodon shared its oceans with Livyatan, a giant predatory whale almost as large, armed with the biggest functional teeth of any animal. Fossil evidence shows both species lived around the same time, likely competing for t