'This book contains a considerable amount of new data on the paleotology, geology, and evolutionary history of the important late Miocene-early Manonga Valley locality in East Africa, and as such it will be of great interest to paleobiologists, geologists, and all with an interest in mammalian evolution.' Journal of Mammalian Evolution, 1997, 4(4)

• 1 • Introduction: Paleontological and Geological Research in the Manonga Valley, Tanzania.- 2 • Detailed Stratigraphy of the Neogene Sediments at Tinde and Other Localities in the Central Manonga Basin.- 3 • Mineralogy of the Wembere-Manonga Formation, Manonga Valley, Tanzania, and the Possible Provenance of the Sediments.- 4 • Paleoecology and Taphonomy of Fossil Localities in the Manonga Valley, Tanzania.- 5 • Fossil Ruminants (Mammalia) from the Manonga Valley, Tanzania.- 6 • The Anatomy, Paleobiology, and Phylogenetic Relationships of the Hippopotamidae (Mammalia, Artiodactyla) from the Manonga Valley, Tanzania.- 7 • Fossil Suids from the Manonga Valley, Tanzania.- 8 • Later Neogene Hipparions from the Manonga Valley, Tanzania.- 9 • Fossil Proboscidea from the Wembere-Manonga Formation, Manonga Valley, Tanzania.- 10 • Systematics, Paleobiogeography, and Paleoenvironmental Significance of Rodents from the Ibole Member, Manonga Valley, Tanzania.- 11 • Fossil Fish from the Manonga Valley, Tanzania: Description, Paleoecology, and Biogeographic Relationships.- 12 • Late Cenozoic Freshwater Mollusks of the Wembere-Manonga Formation, Manonga Valley, Tanzania.- 13 • Paleontology and Biochronology of Fossil Localities in the Manonga Valley, Tanzania.- 14 • Hominid Origins: A View from the Manonga Valley.