500 facts - dinosaurs English Books•English Books•kids•Young Adults
The Kid Who Came From Space•Into the Sideways World•The Gone series:light•The Gone series:lies•The Gone series:Gone•The Gone series:hunger•The Gone series:plague•The Gone series:fear•my beautiful world : my friends senses•my beautiful world : the journey of a piece of paper•my beautiful world : the airport and the toy box•my beautiful world : ayman's tale
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.