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

This scholarly yet approachable work surveys the fossilized bones of the extinct pterodactyls uncovered in the Cambridge Upper Greensand and now housed in the Woodwardian Museum. Written as a segment of a larger museum catalogue, it serves students and enthusiasts by indexing specimens and explaining the comparative anatomy that underpins early classifications. The author openly discusses the methodological challenges of 19th‑century paleontology, offering transparent reasoning behind each taxonomic decision.

The text is richly illustrated with twelve detailed plates that reveal wing membranes, skull fragments, and limb joints, allowing listeners to visualise the delicate structures that once powered these soaring reptiles. By comparing English material with German and French finds, the author traces the group's gradual morphological changes from early Triassic forms to the more derived Cretaceous varieties. Throughout, the narrative remains grounded in the evidence at hand, inviting the audience to follow the reasoning that shaped early concepts of Ornithosaurian evolution.