Dinosaurs

The earliest dinosaurs appeared, evolving from ancestors that survived the Permian Extinction.

Often considered the golden age, seeing the rise of giant sauropods and famous predators like Allosaurus . dinosaurs

Dinosaurs lived during three major geological periods collectively known as the "Age of Reptiles": The earliest dinosaurs appeared

The period featuring the Tyrannosaurus rex and Triceratops, ending with a mass extinction event. Classification and Anatomy Dinosaur Facts | American Museum of Natural History their legacy continues through modern birds

were a diverse group of reptiles that dominated terrestrial ecosystems for approximately during the Mesozoic Era . While most became extinct around 66 million years ago, their legacy continues through modern birds, which are their direct descendants. Geological Timeline