Sökning: "Stephen Formation"

Hittade 3 uppsatser innehållade orden Stephen Formation.

  1. 1. The first study of the micro-fauna of middle Cambrian olistoliths in the Argentine Precordillera

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Elise Fahlgren; Maria Tranvik; [2015]
    Nyckelord :Olistolith; Burgess Shale-type preservation; middle Cambrian; Precordillera; Micropaleontology;

    Sammanfattning : This study implies a survey of a somewhat unexplored Cambrian carbonate formation in the Argentine Precordillera (AP) located in western Argentina, close to the city of San José de Jáchal. The carbonate platform of the AP is a unique piece of the South American geology and is in this study partly surveyed and compared with the Stephen Formation of northern Canada, a middle Cambrian unit renowned for its contents of exceptionally well preserved soft bodied fossils named the Burgess Shale biota. LÄS MER

  3. 2. Linguliform Brachiopods from the Middle Cambrian ‘Thick’ Stephen Formation at Odaray Mountain, Canadian Rocky Mountains

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Sara Saxén; [2015]
    Nyckelord :Brachiopoda; Lingulida; Middle Cambrian; Stephen Formation; new species; Brachiopoda; Lingulida; Mellersta kambrium; Stephenformationen; ny art;

    Sammanfattning : The linguliform brachiopod fauna from the Stephen Formation have long been thought to be very species poor and only consist of a few genera, but new discoveries from lime-stone beds in the “thick” Stephen Formation shows that this is not the case. The species described herein, Kyrshabaktella cf. tatjanae and Ceratreta hansi sp. nov. LÄS MER

  4. 3. Bradoriids from the middle Cambrian 'thin' Stephen Formation at Odaray Mountain, Canadian Rocky Mountains

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Hanna Andersson; [2014]
    Nyckelord :;

    Sammanfattning : Two new species of Cambrian bradoriid arthropods have been found in the ‘thin’ Stephen Formation, Odaray Mountain, Canada; the hipponicharionid Flumenoglacies michaeli n. sp. and the comptalutid Phasoia stephenensis n. sp. LÄS MER