KNOWLEDGE / EXTINCT / DINOSAUR
Dinosaurs were a diverse group of terrestrial reptiles that dominated Earth for over 140 million years during the Mesozoic Era (245-66 million years ago). Characterized by an upright stance unlike modern lizards, they ranged from small, chicken-sized creatures to massive herbivores and carnivores. They went extinct 66 million years ago, likely due to a massive asteroid impact.
