• dinosaur • extinct • fossil standards • SCI.2.3.2 • SCI.3.2.4 Dinosaurs Create a booklet of dinosaur species Objectives • Students will learn that modern day animals and dinosaurs have similar characteristics. Background Information • Dinosaurs were reptiles that roamed the earth for millions of years. • Dinosaurs ranged from the size of a rabbit to the size of a four-story building. • Scientists are able to determine characteristics of dinosaurs by using fossils and bones that are. buried around the world.