Retallack Et Al. 2013 Diskagma
This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier’s archiving and manuscript policies are encouraged to visit: http://www.elsevier.com/authorsrights Author's personal copy Precambrian Research 235 (2013) 71–87 Contents lists available at SciVerse ScienceDirect Precambrian Research jou rnal homepage: www.elsevier.com/locate/precamres Problematic urn-shaped fossils from a Paleoproterozoic (2.2 Ga) paleosol in South Africa a,∗ b c d Gregory J. Retallack , Evelyn S. Krull , Glenn D. Thackray , Dula Parkinson a Department of Geological Sciences, University of Oregon, Eugene, OR 97403, United States b C.S.I.R.O. Land and Water, Waite Campus, Glen Osmond, South Australia 5064, Australia c Department of Geosciences, Idaho State University, Pocatello, ID 83209, United States d Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, United States a r a t i c l e i n f o b s t r a c t Article history: Small (0.3–1.8 mm long), locally abundant, urn-shaped fossils within surface horizons of a paleosol in Received 16 January 2013 the 2.2 Ga Hekpoort Formation near Waterval Onder, South Africa, are here described and named Disk- Received in revised form 22 May 2013 agma buttonii Retallack gen.
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