Benthic foraminifera have played a central role in deep-sea biostratigraphic, paleoecological, and paleoceanographical research over the last thirty years. These single-celled marine protists are important because of their geographic ubiquity, their abundance and diversity in Cretaceous to Recent deep-sea sediments, because of the relationship between occurrence of many modern species and particular water masses, and because of their utility as indicators of environmental conditions both at and below the sediment-water interface. In addition, stable isotopes obtained from deep-sea benthic foraminiferal tests provide paleoceanographers with environmental information that is proving to be of major significance in studies of global climatic change. "PaleoBase: Deep-Sea Benthic Foraminifera" presents the latest taxonomic revision for 300 species in the form of an illustrated, state-of-the-art relational database. Relying primarily on material collected by the Deep-Sea Drilling Project (DSDP) and Ocean Drilling Programme (ODP) for examples of characteristic deep-sea species, and containing over 1,000 colour, digital composite illustrations of unprecendented accuracy, this database represents a significant step forward in the presentation of systematic information in general, and microfossil systematics in particular. For this first time, consistent and reliable information for each species morphology, taxonomy, synonymy, bathymetery, paleoecology, chronostratigraphy, biostratigraphy is summarized in one place and in a searchable format. In addition, the database contains a morphological key for each species and citations to over 350 references from the primary scientific literature. "PaleoBase: Deep-Sea Benthic Foraminifera" provides earth scientists effectively instant access to all the information necessary to make accurate biostratigraphic, palaeoceanographical and palaeoecological interpretations based on benthic foraminiferal data in a structured, easy-to-use manner. The database will be invaluable to professional micropaleontologists, researchers, and students of micropalaeontology. Approximately 350 foram genera. 1000 stunning high resolution images, including SEMs. Fully searchable data on ecology, range, synonomy, biogeography etc. Full references.