British Permian Ostracoda are restricted to Upper Permian sedimentary rocks deposited along the western margin of the Anglo-European Zechstein Sea (Fig. 1). Ostracoda have been recorded in carbonates deposited during the basal marine phase of three evaporite cycles in both the Yorkshire and Durham provinces. West of the Pennine Ridge, a smaller marine basin known as the Bakevellia Sea (named after a marine bivalve genus) has been interpreted as a minor extension of the Zechstein Sea, coeval with the first evaporite cycle. Rocks deposited in the Bakevellia Sea (Fig. 1) have yielded poorly preserved Ostracoda.
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This book charts the stratigraphical distribution of ostracods in the Cambrian to Pleistocene deposits of Britain and outlines their utility for dating and correlating rock sequences, as well as indicating aspects of their palaeoenvironmental and palaeogeographical significance. These small bivalved crustaceans are the most abundant arthropods in the fossil record. Indeed, the stratigraphy of Britain, which embraces many type-sequences, provides a particularly rich and full record of them, from at least the basal Ordovician, and from the British Cambrian there is a biostratigraphy based on their ‘relatives’, the bradoriids and phosphatocopids. Ostracod distributions demonstrate the ecological success story of the group, occupying as they do marine, non-marine and even ‘terrestrial’ habitats. Written by current specialists in the field, this book is an authoritative account and will be welcomed by all micropalaeontologists and applied geologists in the industrial and academic world alike. It is richly illustrated with over 80 plates of electron micrographs and specially drawn maps, diagrams and range-charts.