Essays about: "Silurian"

Showing result 11 - 15 of 35 essays containing the word Silurian.

  1. 11. The Primitive Antiarch Yunnanolepis from China : A Microtomographic Study

    University essay from Uppsala universitet/Paleobiologi

    Author : Jessica Grahn; [2016]
    Keywords : placodermi; microtomography; 3D model; mikrotomografi; 3D-modell;

    Abstract : Placoderms appeared in the Silurian period and rapidly evolved and dominated the waters during the Devonian period. Among the earliest of the placoderms are yunnanolepids, a primitive form of antiarch from the Early Devonian of China and Vietnam. READ MORE

  3. 12. A contribution to the knowledge of Fårö’s hydrogeology

    University essay from Lunds universitet/Geologiska institutionen

    Author : Henric Thulin Olander; [2015]
    Keywords : Fårö; Gotland; groundwater; water supply; Silurian; hydrogeology; SkyTEM; RMT; geophysics; Earth and Environmental Sciences;

    Abstract : Fårö, Sweden´s ninth largest island, is suffering from poor groundwater management. A rampant development within tourism on Fårö to uphold its socioeconomic status has led to insufficient water quality and quantity in the municipal water supply. READ MORE

  4. 13. A Multi-Evidence Approach to the Affinity of Tylodus deltoides Rohon 1893

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Thomas Claybourn; [2015]
    Keywords : 3D virtual palaeohistology; evolution; Silurian; Gnathostomata; Holocephali; Ohesaare; 3D-virtuell paleohistologi; evolution; Silur; Gnathostomata; Holocephali; Ohesaare;

    Abstract : Early gnathostome evolution has recently undergone revision due to newly published phylogenies. Within this new framework, early gnathostomes in the fossil record can be revised, particularly the subject of this paper Tylodus deltoides (Rohon, 1893), vertebrate microremains from the Silurian Ohesaare Formation of Estonia. READ MORE

  5. 14. The fossil wonders of the Silurian Eramosa Lagerstätte of Canada : the jawed polychaete faunas

    University essay from Lunds universitet/Geologiska institutionen

    Author : Jesper Härling; [2012]
    Keywords : scolecodonter; polychaeter; silur; palaeobiogeography; palaeoecology; Silurian; Eramosa Lagerstätte; scolecodonts; polychaete faunas; paleoekologi; paleobiogeografi.; Earth and Environmental Sciences;

    Abstract : The Silurian Eramosa Lagerstätte in Ontario, Canada, is represented by three distinguished biotas (1 to 3) with exceptionally well preserved fossils. In this study, the jawed polychaete fauna is described and discussed for the first time, on the basis of scolecodonts and jaw apparatuses, recovered from Biota 1 and 3. READ MORE

  6. 15. An interpretation of oncoid mass-occurrence during the Late Silurian Lau Event, Gotland, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Martin Qvarnström; [2012]
    Keywords : Bjärsjölagård; Gotland; microbialites; Silurian; Oncoids; Lau Event; ecological crisis; Onkoider; Silur; microbialiter; ekologisk kris; Earth and Environmental Sciences;

    Abstract : The geological significance of the microbial-formed oncoid is not as well understood as the recognized, analogous stromatolite but can, as well be used as an environmental indicator. In association with the larger Phanerozoic mass extinctions, a resurgence of microbialites as a disaster fauna is at present an accepted view. READ MORE