8 research outputs found

    First Lower Jurassic vertebrate burrow from southern Africa (upper Elliot Formation, Karoo Basin, South Africa)

    No full text
    Vertebrate burrows are common ichnofossils in the Permo-Triassic of the main Karoo Basin in South Africa. They are generally attributable to one of several lineages of therapsid, including the derived clade known as cynodonts. Despite the presence of cynodont species in the Upper Triassic and Lower Jurassic of the Karoo Supergroup, vertebrate burrows have never been reported from this part of the succession. Recent fieldwork recovered a semi-elliptical burrow cast in the Lower Jurassic upper Elliot Formation (Stormberg Group) on the farm Edelweiss 698 (Free State). The horizontal and vertical diameters of the burrow cast are ~ 18 and ~ 7 cm, respectively. This semi-horizontal, straight to slightly sinuous tunnel is ~ 50 cm long with a ramp angle of  20 cm deep) desiccation cracks, invertebrate trace fossils, calcareous rhizoconcretions, and spherical-to-elongated carbonate nodules. These and other associated sedimentary features provide evidence for a semi-arid, fluvio-lacustrine palaeoenvironment during the burrowing activity. Based on comparisons to fossil and modern burrows, this burrow cast is interpreted as a vertebrate burrow, and is the first record of vertebrate fossorial activity within the Lower Jurassic of southern Africa. The ancient burrow architect has yet to be positively identified. However, given the size and morphology of the burrow and the occurrence of similar sized fossil cynodont therapsids that inhabited the main Karoo Basin in the earliest Jurassic, the potential burrow-maker may be tentatively linked to the Cynodontia (e.g., Pachygenelus - an advanced tritheledontid).Fil: Bordy, E.M.. University Of Cape Town;Fil: Sciscio, L.. University Of Cape Town;Fil: Abdala, Nestor Fernando. University of the Witwatersrand; Sudáfrica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; ArgentinaFil: McPhee, B.W.. University of the Witwatersrand; SudáfricaFil: Choiniere, J.N.. University of the Witwatersrand; Sudáfric

    Descriptive data on cardiovascular and metabolic risk factors in ambulatory and non-ambulatory adults with cerebral palsy

    Get PDF
    Forty-two participants with cerebral palsy were recruited for a study examining traditional and novel indicators of cardiovascular risk (McPhee et al., 2015 [1]). Data pertaining to the prevalence of obesity, smoking, hypertension, and metabolic risk are provided. These data are presented along with the scoring methods used in evaluation of the study participants. Percentages are included for comparative purposes with the existing literature

    Effects of nutritional modifications on the water-holding capacity of fresh pork: a review

    No full text

    A Survey and Critique of the Literature on Crosslinking Agents and Mechanisms as Related to Wool Keratin

    No full text
    corecore