A mass extinction that occurred over 200 million years ago, killed off a slew of huge predators, including hefty beasts that looked like crocodiles and enormous armadillos, according to new research.
Some of the prehistoric predators - animals known collectively as the early pseudosuchians - likely preyed on certain dinosaurs, which later evolved some of impressive characteristics of the ancient pseudosuchians. Those included features like sturdy body armour and strong tails for whacking enemies.
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Croc extinction led to dinosaur dominationpseudosuchians crocodiles armadillos dinosaur domination extinction
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