vol. 43 no. 10 939-942
- Received 4 June 2015.
- Revision received 19 August 2015.
- Accepted 20 August 2015.
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© 2015 Geological Society of America
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- Robert A. Gastaldo1,
- Sandra L. Kamo2,
- Johann Neveling3,
- John W. Geissman4,
- Marion Bamford5 and
- Cindy V. Looy6
- 1Department of Geology, Colby College, Waterville, Maine 04901, USA
- 2Jack Satterly Geochronology Laboratory, Department of Geology, University of Toronto Toronto, Ontario M5S 3B1, Canada
- 3Council for Geosciences, Private Bag x112, Silverton, Pretoria 0001, South Africa
- 4Department of Geosciences, University of Texas at Dallas, Richardson, Texas 75080-3021, USA
- 5Evolutionary Studies Institute, University of Witwatersrand, Johannesburg 2050, South Africa
- 6Department of Integrated Biology and Museum of Paleontology, 2033 Valley Life Sciences Building #3140, University of California–Berkeley, Berkeley, California 94720, USA