Search for dissertations about: "Paleontologi"

Showing result 6 - 10 of 35 swedish dissertations containing the word Paleontologi.

  2. 6. Late Weichselian and early Holocene shore displacement in the central Baltic, based on stratigraphical and morphological records from eastern Småland and Gotland, Sweden

    Author : Nils-Olof Svensson; Kvartärgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; pollen; Paleontologi; Shore displacement; Land uplift; Paleobotanic;

    Abstract : The glacial unloading and resulting isostatic land uplift have together with hydro-isostasy, eustatic rise of sea-level and geoidal changes, ruled the shore displacement of Fennoscandia. Within the Baltic basin, periods of damming and shifts of outlet further complicated the shore displacement during the period studied, c. 12,200-8400 BP. READ MORE

  4. 7. Upper middle Cambrian through Furongian of Scandinavia with focus on trilobites, paleoenvironments and correlations

    Author : Fredrik Terfelt; Berggrundsgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Paleontologi; Palaeontology; Scandinavia; Paleoenvironments; Biostratigraphy; Trilobites; Cambrian; Furongian;

    Abstract : This thesis is based on studies of upper middle Cambrian through Furongian strata in Scandinavia with focus on trilobite biostratigraphy, taxonomy, paleoecology, and intercontinental correlation. The material studied derives mainly from Västergötland and Scania, southern Sweden. READ MORE

  5. 8. Late Eocene through Oligocene calcareous nannofossils from the paleo-equatorial Pacific Ocean – taxonomy, preservation history, biochronology and evolution

    Author : Teodora Blaj; Jan Backman; Jorijntje Henderiks; Isabella Raffi; Paul Bown; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; marine sediments; calcareous nannofossils; late Eocene; Oligocene; biochronology; evolution; morphometry; taxonomy; ODP Leg 199 Site 1218; paleo-equatorial Pacific Ocean; Historical geology and palaeontology; Historisk geologi och paleontologi; Marine Geoscience; marin geovetenskap;

    Abstract : This study aims to unravel the ecological and evolutionary dynamics within the calcareous nannofossil communities at the Eocene/Oligocene (E/O) transition and during the Oligocene time when Cenozoic 'icehouse' conditions were established. The main question this study aims to answer is whether the changes in the nannofossil assemblages were controlled by intrinsic evolutionary trends or if the changes were controlled by environmental factors such as changes in temperature and nutrient availability in the surface water. READ MORE

  6. 9. Silurian-Devonian vertebrates from the Northern hemisphere

    Author : Henning Blom; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Geovetenskap; Earth sciences; Geovetenskap; Historical Geology and Paleontology; historisk geologi och paleontologi;

    Abstract : Microscopic remains of early vertebrates such as scales and dermal hone fragments are common in Silurian andDevonian rocks world wide. Although they only represent a small part of the whole animal they still provideimportant information about the organism and its evolution, ecology and distribution. READ MORE

  7. 10. The morphology and evolutionary significance of the anomalocaridids

    Author : Allison Daley; Graham E. Budd; Nigel C. Hughes; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; anomalocaridids; Cambrian; Burgess Shale; exceptional preservation; palaeontology; Historical geology and palaeontology; Historisk geologi och paleontologi; Historical Geology and Paleontology; Historisk geologi och paleontologi;

    Abstract : Approximately 600 to 500 million years ago, a major evolutionary radiation called the “Cambrian Explosion” gave rise to nearly all of the major animal phyla known today. This radiation is recorded by various fossil lagerstätten, such as the Burgess Shale in Canada, where soft-bodied animals are preserved in exquisite detail. READ MORE