Browsing by Subject "Palaeobotany"

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    Cold case files : palaeoforensic and taphonomic study of the Mamafura dicynodont from the end permian
    (2010) Fordyce, Nicholas; Chinsamy-Turan, Anusuya; Smith, Roger
    Dicynodonts were non-mammalian herbivorous therapsids (mammal-like reptiles) that flourished world-wide during the Permian and Triassic Periods. They are nowhere more abundant than in the rock strata of the Karoo basin in South Afiica. Taphonomy, the transition from biosphere to lithosphere, is of great geological and biological significance and has provided remarkable insight into palaeoenvironments. A partially articulated dicynodont that has been fossilised alongside an unidentified predator tooth shows evidence of predation and is analysed here. The dicynodont is possibly Oudenodon grandis and was most likely drowned after which it was scavenged from by a gorgonopsian predator, Aelurognathus. The fossil is important as it provides further insight into the ecology of the Late Permian and it enhances our taphonomic understanding.
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    Palynological analysis from a bush karoo rat (Otomys unisulcatus) lodge near Prince Albert, South Africa
    (2001) Patrickson, Shela; Meadows, Michael E
    The "desertification" debate surrounding the Karoo Biome of South Africa has recently inspired much research in this region. The preservation of pollen in middens in arid environments from different parts of the world has great potential for the reconstruction of past vegetation. A lodge of the bush karoo rat (Otomys unisulcatus) was excavated near Prince Albert, South Africa, and the high numbers of well-preserved pollen grains was analysed. The vegetation reconstruction suggested that there was a decline in grasses over the whole sequence, while the vegetation experienced several short-term fluctuations throughout the time period. The ages within the lodge were uncertain, although the material is likely to be modern. The palynological analysis appear to be reliable and corresponds relatively well with other studies. The lodges of these species could therefore provide an exciting new source of historical pollen in the arid regions of southern Africa.