This document provides information on different types of dinosaurs that lived during various periods, including the Anatotitan, Triceratops, Gallimimus, Minmi, Tyrannosaurus, Prenocephale, Pteranodon, and Mesosaurs. Each dinosaur's name, size, weight, diet, and period they lived in is listed. The document aims to teach about the different kinds of dinosaurs that once roamed the Earth.