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Calibrating the Late Ordovician glaciation and mass extinction by the eccentricity cycles of Earth's orbit
A process-based sedimentological analysis of Upper Ordovician glacial-marine rocks in Africa suggests that full glaciation of the continental shelf started in the late extraordinarius Zone of theExpand
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The Geology of the Cape Town area
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The Apparatus Architecture and Function of Promissum pulchrum Kovacs-Endrody (Conodonta, Upper Ordovician) and the Prioniodontid Plan
More than 100 complete apparatuses of the conodont Promissum pulchrum have been collected as natural assemblages on bedding surfaces of the Soom Shale Member, Cedarberg Formation, South Africa.Expand
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Two Devonian mitrates from South Africa
The anomalocystitid mitrate Placocystella africana (Gydo and Voorstehoek shales, upper Emsian-lower Eifelian, Bokkeveld Group, Cape Province, South Africa) is redescribed. The internal anatomy of theExpand
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Preservation of fossils in clay minerals; a unique example from the Upper Ordovician Soom Shale, South Africa
SUMMARY In the Soom Shale, labile soft tissues have been replaced rapidly after death by authigenic clay minerals which now have an illitic composition. There are two possible pathways for thisExpand
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Geochemistry and palaeogeography of upper Ordovician glaciogenic sedimentary rocks in the Table Mountain Group, South Africa
Abstract Evidence for a late Ordovician glaciation is best known from northern Africa and locally in South Africa, and western South America. The South African glacial deposits (Pakhuis Formation ofExpand
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A 17‐element conodont apparatus from the Soom Shale Lagerstätte (Upper Ordovician), South Africa
Natural assemblages of a new conodont taxon, Notiodella keblon, from the Upper Ordovician Soom Shale Lagerstatte of South Africa contain 17 elements. This is the first time that a 17-elementExpand
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Age of the Cedarberg Formation, South Africa and early land plant evolution
The first occurrence of Early Paleozoic land plants is reported from South Africa. The plant remains are small, compact tetrahedral spore tetrads. They occur abundantly in the Soom Shale Member ofExpand
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