How do scientists know so much about animals that humans have never met? Watch paleontologists at work, and understand how they piece together dinosaur skeletons. Learn about the Mesozoic era and the kinds of dinosaurs that lived during the Triassic, Jurassic, and Cretaceous periods.

Originally released by Mazzarella Media, 2007. Streaming video file encoded with permission for digital streaming by Infobase on May 02, 2015.

How do We Know so Much About Dinosaurs? (1:59); --How do You Find Fossils? (1:04); -- What Can We Learn from Fossils? (2:45); -- Dinosaurs in the Mesozoic Era (2:08); -- Saurischia and Ornithischia (2:27); -- Missing Fossil Information (1:48); -- Credits: Fossils and Dinosaurs: Real World Science (-9:0-48);.