The Ornithosauria An elementary study of the bones of Pterodactyles made from fossil remains found in the Cambridge Upper Greensand, and arranged in the Woodwardian Museum of the University of Cambridge

"The Ornithosauria" by H. G. Seeley is a scientific study that examines the fossilized bones of pterodactyls discovered in the Cambridge Upper Greensand area; it dives into the anatomy, classification, and evolutionary connections of these ancient flying reptiles, specifically looking at their bone structures and how they compare to both modern birds and other reptiles, using a large collection of fossils from the Woodwardian Museum to classify the prehistoric creatures and place them in historical context.