The Late Triassic to Early Jurassic Elliot Formation is part of the Stormberg Group (Karoo Supergroup) of South Africa. The unit is palaeontlologically, because it preserves not only a range of vertebrate fossils, but also a plethora of ichnofossil and the boundary of Triassic and Jurassic in Southern Africa. The Formation is considered a stratigraphic equivalent of the Omingonde Formation, Etjo Basin, Namibia, with the Bodibeng Sandstone Formation, Tuli Basin, Botswana, with the upper Formation, Kalahari Karoo Basin. All Upper Triassic-Lower Jurassic continental red beds of South Africa, irrespective their geographic locality relative to the main Karoo Basin are now termed Elliot Formation due to their very similar lithologic and stratigraphic position.
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Bordy et al. (2015) studied this question.
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