Sökning: "reptiler"

Visar resultat 11 - 15 av 32 uppsatser innehållade ordet reptiler.

  1. 11. Palaeoenvironments of the Earliest (Middle Devonian) Tetrapod Trackways from the Holy Cross Mountains, Poland; Locomotion in a Terrestrial Setting?

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Martin Qvarnström; [2015]
    Nyckelord :Tetrapods; palaeoenvironment; trackways; paleosols; microfacies; trace fossils; fin-limb transition; Holy Cross Mountains.;

    Sammanfattning : The palaeoenvironment from which early tetrapods emerged is crucial to comprehend in order to understand the mechanisms that drove and allowed the terrestrialization of vertebrates; one of the most important evolutionary ‘events’ in the history of animals. Nevertheless, much of the terrestrialization is shrouded in obscurity, inter alia, due to scarcity of early tetrapods in the fossil record. LÄS MER

  3. 12. Diversity and Ecology of a Middle Campanian (Late Cretaceous) Marine Reptile Assemblage from Skåne, Southern Sweden

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Lena Källsten; [2015]
    Nyckelord :Landmark morphometrics; Marine amniotes; Cretaceous; Mosasauridae; Plesiosauridae; Aigialosuchus; Landmärkesbaserad morfometri; marina amnioter; Kritaperioden; Mosasauridae; Plesiosauridae; Aigialosuchus;

    Sammanfattning : This study has looked at an assemblage of fossilised teeth from Mesozoic marine amniotes from the Kristianstad basin in southern Sweden in order to make an estimate of the ecomorph diversity within said assemblage through looking at the morphology of the teeth. This was done as a pilot study to see if further studies would be able to produce worthwhile results. LÄS MER

  4. 13. 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

  5. 14. Hanteringsmetoder av reptiler på djursjukhus med hänsyn till stress och skaderisker

    Kandidat-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Filip Zethraeus; [2014]
    Nyckelord :hanteringsmetoder; reptiler; stress; skaderisker;

    Sammanfattning : It is popular to keep reptiles as pets in Swedish households. The number of households reporting reptile ownership is more than 15 000 (SCB, 2006). This means that a veterinary practice should consider how to take care of reptiles as patients. LÄS MER

  7. 15. Ett mystiskt ryggradsdjursfossil från Åsen och dess koppling till den skånska, krittida ryggradsdjursfaunan

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Casandra Hajny; [2014]
    Nyckelord :bachelor thesis; fossil; plesiosaur; vertebrates; Sweden; Scania; Kristianstad basin; mosasaur; dinosaur; examensarbete; svanödla; krita; Sverige; Skåne; Åsen; ryggradsdjur; Kristanstadbassängen; Earth and Environmental Sciences;

    Sammanfattning : I detta arbete presenteras en del av den ryggradsdjursfauna som fanns i södra Sverige under krittidens senare del, dvs. för mellan 100 och 66 miljoner år sedan. Vidare avhandlas ett mystiskt, fossilt skelettfynd från Kristianstadbassängen i nordöstra Skåne. LÄS MER