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Article: The Karoo supergroup: a geological and palaeontological superlative.
- Article from:
- Rocks & Minerals
- Article date:
- January 1, 2002
- Author:
CopyrightCOPYRIGHT 2002 Heldref Publications. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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The Karoo basin of South Africa covers approximately two-thirds of the land surface of South Africa (fig. 1) and preserves a maximum thickness of 12 kilometers (Johnson et al. 1997). This sequence of predominantly sedimentary rocks preserves a world-class assemblage of fossils, spanning a time-range from the Late Carboniferous to the Early Jurassic.
[FIGURE 1 OMITTED]
The first fossil reptiles from the Karoo were found in the 1850s by Andrew Geddes Bain and were the first specimens of a new group of "reptiles" called the therapsids, which were recognized as being the distant ancestors of mammals. Since the 1850s thousands more tetrapod fossils have been ...
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