While the 1st International Cephalopod Symposium, York 1979, was dedicated to the ammonites, the Tübingen symposium focussed on biological, evolutionary and paleogeographic studies. Hopefully it contributed to the better understanding of this fascinating group of mollusks and enabled to see how the processes of ontogeny and phylogeny work in reality ? and not only in theoretical concepts. In addition it hopefully helped to better recognize the patterns of geographic migration and distribution ? so important for stratigraphic dating ? and, last but not least, to get an idea of what happened after deposition of the shells. These proceedings may be of use for zoologists as well as paleontologists, evolutionarists and stratigraphers.