1. Space and time in brachiopod history;Ager,1971
2. The Nature of Stratigraphic Record;Ager,1981
3. Arkell, W.J., Kummel, B., Wright, C.W., 1957. Mesozoic Ammonoidea. In: Moore, R.C.(Ed.), Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Geological Society of America and University of Kansas Press, Lawrence, pp. L80–L437.
4. Micro-ornament on early whorls of Mesozoic ammonites: implications for early ontogeny;Bandel;J. Paleontol.,1982
5. Palaeobiogeography of the Mesozoic, Ammonoidea, with Special Reference to Asia and the Pacific;Bando,1987