Sökning: "tooth morphology"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden tooth morphology.

  1. 1. Does Size Matter? An osteological analysis of the relation between tooth size and dental caries from S:t Clemens cemetery in Lund.

    Master-uppsats, Lunds universitet/Historisk osteologi

    Författare :Felicia Törnberg; [2019]
    Nyckelord :Human osteology; Dental Caries; Tooth Size; Focal Infection Theory; Evolutionary Theory; S:t Clemens; Medieval Lund. ; History and Archaeology;

    Sammanfattning : The aim of this thesis was to investigate the relation between tooth size and dental caries in a medieval material from S:t Clemens cemetery in Lund. Dental caries is one of the most common infectious disease in humankind, both in prehistoric and modern populations. Evidence of caries gives the opportunity to study health and diet in populations. LÄS MER

  3. 2. Morphological variation in the hadrosauroid dentary

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Fredrik Söderblom; [2017]
    Nyckelord :Hadrosauroidea; dentary; morphometric; heterochrony; peramorphosis; mastication; Hadrosauroidea; dentärben; morfometrisk; heterokroni; peramorfos; tugga;

    Sammanfattning : The near global success reached by hadrosaurid dinosaurs during the Cretaceous has been attributed to their ability to masticate (chew). This behavior is more commonly recognized as a mammalian adaptation and, as a result, its occurrence in a non-mammalian lineage should be accompanied with several evolutionary modifications associated with food collection and processing. LÄS MER

  4. 3. Dynamics of Selachian (Shark) Dental Morphology During the Early Mesozoic

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Alexander Paxinos; [2017]
    Nyckelord :Early Mesozoic; Selachii; morphological disparity; geometric morphometrics; early radiation; Tidig Mesozoisk; Selachimorpha; morfologisk disparitet; geometrisk morfometri; tidig strålning;

    Sammanfattning : The ancestors of all modern day sharks and rays (Neoselachii) may have appeared during the Late Palaeozoic, but their major diversification happened sometime during the Early Mesozoic. Taxonomic evidence places the first neoselachian diversification in the Early Jurassic. LÄS MER

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

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

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

    Sammanfattning : 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. LÄS MER

  7. 5. 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