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Preface Scope and development of Palaeontology
Systematics and taxonomy
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abundance adapted algae alleles ammonites annelids areas arthropods Baltic basins benthos biocoenosis biotopes bivalves body brachiopods bryozoa calcareous calcite Cambrian Carboniferous cells cephalopods changes characteristics classification coelom corals Crawling trails Cretaceous depends depth Devonian diagenesis distribution diversity Dwelling burrows ecological environments evolution evolutionary example factors fauna fish flora foraminifera forms gastropods genera genus geographical Geology groups growth habitat important increases individual Jurassic ammonite larval live mammals marine Mesozoic morphological mutations natural selection number of species º º occur ocean Ordovician organisms original oxygen palaeontology Palaeozoic parasites Permian phase Phylum planktonic plants and animals Pleistocene population preserved produced radiation Recent recognised reefs relationship remains reproduction reptiles salinity sediment sediment surface Seilacher sessile shell Silurian skeletal material skeleton specialised sponges stages stratigraphic structure substrate taxa temperature terrestrial Tertiary Tethys trace fossils Triassic types upper Jurassic usually vagile variability vertebrates whereas worms