Calcified metazoans in thrombolite-stromatolite reefs of the terminal Proterozoic Nama Group, Namibia

@inproceedings{Grotzinger2000CalcifiedMI,
  title={Calcified metazoans in thrombolite-stromatolite reefs of the terminal Proterozoic Nama Group, Namibia},
  author={John P. Grotzinger and Wesley Andr{\'e}s Watters and Andrew H. Knoll},
  booktitle={Paleobiology},
  year={2000}
}
Abstract Reefs containing abundant calcified metazoans occur at several stratigraphic levels within carbonate platforms of the terminal Proterozoic Nama Group, central and southern Namibia. The reef-bearing strata span an interval ranging from approximately 550 Ma to 543 Ma. The reefs are composed of thrombolites (clotted internal texture) and stromatolites (laminated internal texture) that form laterally continuous biostromes, isolated patch reefs, and isolated pinnacle reefs ranging in scale… 

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