500 facts - dinosaurs English Books•English Books•kids•Young Adults
Harry Potter Box Set: The Complete Collection•adventure in khufu's pyramid•english numbers•english letters•the nursery (ai-rwdah)•my lovely family•no bullying - level 1•kalila and demna•building up the personality - level 2•building up the personality - level 3•building up the personality - level 1•english numbers - level 1
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.