1993. 257 p., 189 text figures, col. frontispiece. Original printed wrappers.Description of well-preserved ammonites, including nice SEM photos of protoconchs, remnants of mandibles, and peculiar hook-like structures and a discussion of their form and function. This study also includes many new species. Many of the "figures" actually are plates (i.e. page-sized), each with many photographic figures of specimens. A fine, clean, "as new" copy.