Coastal exposures of the Santa Cruz Formation in southern Patagonia have been a fertile ground for recovery of Early Miocene vertebrates for more than 100 years. This volume presents a comprehensive compilation of important mammalian groups which continue to thrive today. It includes the most recent fossil finds as well as important new interpretations based on ten years of fieldwork by the authors. A key focus is placed on the paleoclimate and paleoenvironment during the time of deposition in the Middle Miocene Climatic Optimum (MMCO) between twenty and fifteen million years ago. The authors present the first reconstruction of what climatic conditions were like and present important new evidence of the geochronological age, habits and community structures of fossil bird and mammal species. Academic researchers and graduate students in paleontology, paleobiology, paleoecology, stratigraphy, climatology and geochronology will find this a valuable source of information about this fascinating geological formation.

The Sinap Formation in central Turkey near the city of Ankara preserves a rich record of mammalian evolution from about 15 to 5 million years ago and is one of the few sites in this region that also has fossil apes. It is unique among other fossil localities from Europe to Western Asia in that it has a thick stratigraphic section and preserves a long record of geological time. The authors have been able to piece together a detailed record of faunal change and, by adding paleomagnetic and radiometric dating techniques, have produced a chronostratigraphy for the Formation. Because of the dual importance of the rich record of the fossils, and the dating of the sediments, the editors have been able to attract some of the leading authorities on Eurasian Neogene paleontology and geology to contribute to this reference work. The results from the Sinap Formation will be the template against which other sites from Europe to Asia are compared.

Proceedings of the NATO Advanced Research Workshop, Bremen, Germany, October 10-14, 1988