ABSTRACT
This chapter integrates the many different kinds of evidence available from the rock and fossil record and derives a paleogeographic and paleoecologic reconstruction for a single, time-synchronous interval within the formation. Ostracodes are the most abundant and best preserved of the invertebrate organisms, and are making fundamental contributions to the reconstruction of paleo-Lake Turkana. Analysis of paleosols and soil carbonate horizons is being undertaken by Mount. An unexpected new source of paleoecological information turned up during geologic trenching in the form of numerous bedding planes with preserved tracks of large vertebrates. The bone patches may occur due to a number of taphonomic processes, only one of which is hominid activity. In stratigraphic sequences, bone horizons occur most frequently at points of marked change in sedimentation, especially at contacts between paleo-land surfaces and transgressive lacustrine deposits.
