500 facts - dinosaurs English Books•English Books•kids•Young Adults
Things that move - Fire engine•Things that move - Train•Things that move - Aircraft•Things that move - Truck•Things that move - Car•Things that move - Police•Things that move - Bus•Things that move - Ambulance•Time to Be Confident•Time to Be Curious•Time to Be Mindful•Time to Be Patient
Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 231 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research.