‎"SEELEY, H.G. - TAXONOMY OF REPTILIA.‎
‎Researches on the Structure, Organization, and Classification of the Fossil Reptilia.- V. On Associated Bones of a Small Anomodont reptile, Keirognathus cordylus (Seeley), showing the relative Dimensions of the Anterior Parts of the Skeleton, and Stru...‎

‎(London, Harrison and Sons, 1889). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1888 - Vol. 179- Series B., Pp. 487-501 a. 2 lithographed plates.‎

Reference : 42926

‎First printing of an importent work in the taxonomy of dinosaurs and extinct reptilia. Harry Govier Seeley was a British paleontologist who determined that dinosaurs fell into two great groups, the Saurischians and the Ornithischians, based on the nature of their pelvic bones and joints. He published his results from 1888 and onwards. ‎