Taxonomy and Ecology of the Fossil Freshwater Molluscs from Late Miocene Palaeolake Obweruka

Beschreibung

Introduction   7 Objectives   7 Geographical and Geological Setting   7 Material and Methods   11 Sampling   11 Material   11 Curation   11 Methods   11 Results   12 Taxonomic descriptions   12 Class Gastropoda   12 Family Viviparidae   12 Genus Neothauma   12 Species Neothauma rotundum   12 Species Neothauma maramaensis nov.   13 Species Neothauma jupadwongaensis nov.   15 Genus Kaya   16 Species Kaya nodulosus   16 Family Ampullariidae   18 Genus Lanistes   18 Species Lanistes bishopi   18 Species Lanistes umbilicatus nov.   19 Species Lanistes depressus nov.   19 Genus Pila   20 Species Pila sp. indet. A   20 Family Thiaridae1   20 Genus Melanoides   20 Species Melanoides tuberculata   20 Family Paludomidae   22 Genus Potadomoides   22 Species Potadomoides armata nov.   22 Species Potadomoides jupakombae nov.   25 Genus Pseudocleopatra   27 Species Pseudocleopatra carinata   27 Species Pseudocleopatra musiimei   28 Genus Cleopatra   30 Species Cleopatra pakechiensis nov.   30 Species Cleopatra dubia   31 Class Bivalvia   33 Family Unionidae   33 Genus Coelatura   33 Species Coelatura gommeryi nov.   33 Species ?Coelatura sp. indet. A.   36 Genus Nitia   36 Species Nitia cf. monceti   36 Genus Nkondonaia   37 Species Nkondonaia bisulcata   37 Family Iridinidae   39 Genus Pleiodon   39 Species Pleiodon nambiae nov.   39 Species Pleiodon cf. lepersonnei   40 Species Pleiodon sp. indet. A   41 Genus Chambardia   42 Species Chambardia sp. indet. A   42 Family Etheriidae   43 Genus Etheria   43 Species Etheria elliptica   43 Discussion   45 The existing biochronological framework for the Late Cenozoic molluscan assemblages in the Albertine Basin   45 Composition and age of the molluscan assemblages from the region north of Lake Albert   46 The implications of the newly discovered Albertine molluscan fossils for palaeontological and evolutionary research   49 Conclusions   49 Acknowledgments   50 References   51 Annex   53

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Sarah MUSALIZI

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