Sökning: "belemnites"

Hittade 4 uppsatser innehållade ordet belemnites.

  1. 1. Testing the Cretaceous Diversity of Ichthyosaurs and Their Extinction Hypotheses Using a Quantitative Approach

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Naz Acikkol; [2015]
    Nyckelord :diversity; ichthyosaurs; extinction; belemnites; ammonites; prey; predator; rock record; sampling bias; Cretaceous; mångfald; utdöende; fisködlor; belemniter; rovdjur; byte;

    Sammanfattning : As portrayed in Before the Dinosaur: the Historical Significance of the Fossil Marine Reptiles, ichthyosaurs, as other Mesozoic marine amniotes, have been unfairly overshadowed by dinosaurs in both popular culture and the field of vertebrate palaeontology. Yet by the effort of dedicated researchers, work on these fish-like marine reptiles had never died out, and in fact a second wave of interest emerged in the late 20th century. LÄS MER

  3. 2. Paleoecology and sedimentology of the Upper Cretaceous (Campanian), marine strata at Åsen, Kristianstad Basin, Southern Sweden, Scania

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Faisal Javed Iqbal; [2013]
    Nyckelord :Campanian; Belemnellocamax mammilatus Zone; Belemnellocamax balsvikensis Zone; Brachiopods; Bivalves; Belemnites; Bryozoans; Barnacle; Sea urchin; corals; coprolites; shark teeth; vertebrate fossils; XRF; Sr Ca; Steinkern; Earth and Environmental Sciences;

    Sammanfattning : The Campanian marine strata from Åsen, north east part of the Kristianstad Basin (southern Sweden) contain a most diverse vertebrate and invertebrate marine fossil assemblages. A diverse fossil fauna was collected from Campanian deposits from a ca. 4.15m thick section during June-August 2010-2012. LÄS MER

  4. 3. Belemniters stabila isotopsammansättning : paleomiljöns och diagenesens betydelse

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Carina Ljungberg; [2004]
    Nyckelord :isotoper; belemniter; klimat; paleotemperatur; krita; Kristianstadbassängen; Skåne; Sverige; oxygen; isotopes; belemnites; climate; palaeotemperature; Cretaceous; Kristianstad; Scania; Sweden; Earth and Environmental Sciences;

    Sammanfattning : Stable isotope compositions (δ18 0 and δ13 C) and cathodoluminescence characteristics were determined in 112 belemnite rostra, including Belemnellocamax grossouvrei, Belemnitella alpha, Belemnellocamax mammillatus, Belemnellocamax balsvikensis, Gonioteuthis quadrata scaniensis, Belemnitella mucronata and Belemnella lanceolata. The main aims were to determine palaeoenvironmental and diagenetic influences on the fossil tissue, and to discuss the marine palaeotemperatures during Late Cretaceous times. LÄS MER

  5. 4. Petrology and depositional history of the Campanian strata at Maltesholm, Scania, southern Sweden

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Olof Sandström; [1994]
    Nyckelord :Kristianstad basin; Maltesholm; Campanian; grainstone; facies; storm sediments; hummocky cross bedding; conglomerates; shallow marine environment; rudists; belemnites; Earth and Environmental Sciences;

    Sammanfattning : Campanian sediments of the Maltesholm quarry consist of mostly coarse grained, poorly consolidated, ruditic grainstones, almost free of micrite and lime mud, with interbedded clay horizons. The main constituents of the grainstones are coralline algae and quartz. LÄS MER