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Paper Number: 1291

New Discoveries in the late Neoproterozoic of Namibia: New Material-New Analysis

Vickers-Rich­­, P.1, Trusler, P.W.2, Narbonne, G.M.3, Sharp, A.4, Ivantsov, A.Yu. 5, Linnemann, U.6, Hofmann, M.7, Kriesfeld, L.8, Kaufman, A.J.9, Cui, H.10, Smith, J.11, Hoffmann, K.H.12, Schneider, G.13, Elliott, D.1, Fedonkin, M.A.15, Hall, M. 16,& Rich, T.H.17

  1. School of EAE, Monash University, Melbourne, Vic, Australia, pat.rich@monash.edu

  2. School of EAE, Monash University, Melbourne, Vic 3800, Australia

  3. Queens University, Dept Geol Sci & Geol Eng, Kingston, On, Canada

4. School of Sci & Tech, University of New England, Armidale, NSW, Australia

5. Paleontological Institute, Russian Academy of Sciences, Moscow, Russia

6. Senckenberg Naturhist Samml, Dresden, Geochron, Dresden, Germany

7. Senckenberg Naturhist Samml, Dresden, Geochron, Dresden, Germany

8. School of EAE, Monash University, Melbourne, Vic 3800, Australia

9. Dept of Geol, University of Maryland, College Park, Md, USA

10. Dept of Geol and NASA Astrobio Instit, University of Wisconsin-Madison, WI, USA

11. School of EAE, Monash University, Melbourne, Vic, Australia

12. Namibian Geol Survey, Windhoek, Namibia

13. Namibian Geol Survey, Windhoek, Namibia

14. School of EAE, Monash University, Melbourne, Vic 3800, Australia

15. Paleontological Institute, Russian Academy of Sciences, Moscow, Russia

16. School of EAE, Monash University, Melbourne, Vic 3800, Australia

17. Mus Victoria,P. O. Box 666, Melbourne, Vic, Australia

Over the past 15 years UNESCO Projects IGCP493 /587 have concentrated efforts by a consortium of researchers from around the world on the detailed field documentation and exploration of the Nama Group in southern Nambia, an important sequence recording how life so changed from 600 to 530 million years ago – across the Precambrian-Cambrian boundary. An impressive collection of material from the area around Aus has increased the up until then known fossil material [1] many fold in those years [2-6]. New scanning and analytic techniques, involving facilities such as the Australian synchrotron, and in depth reconstruction art and use of new graphic programs, along with a detailed sedimentology of deposits preserving these new discoveries have led to a marked improvement in the understanding of both the morphology and relationships of the organisms, the environments they inhabited and the effects imposed by how they were preserved.

References

[1] Narbonne et al (1997) Jour Paleo 71:953-967. Figures 1-8. 1-2, Stratigraphy and location [2] Ivantsov A et al. (2015) Lethaia DOI 10.1111/let.12164 of new material; 3, preservations style

[3] Elliott D et al (2016) Jour Paleo (in press) common in Nama Group; 4, first complete

[4] Elliott D et al (2011) Acta Palaeo Polonica 56:641-650. Ernietta description; 5-6, internal structure

[5] Hall M et al. (2013) Precamb Res 238:214-232. determined by micro-CT scanning of new

[6] Vickers-Rich (2007) Jour Paleo 87:1-15 Rangea; 7, new Rangea material; 8, channel which yielded abundant new material

C:\Users\patrich\Desktop\Figure 2 Stratigraphy PT 600ppi JP format 9x12.5cm.tif 1 C:\Users\patrich\Desktop\Figure 1 REVISED 2 Aar Map Namibia MH-PT 600ppi JP format 9x.tif 2 C:\Users\patrich\Desktop\Figure 10. Rangea Taphonomy JP format PT 600ppi.tif 34C:\Users\patrich\Desktop\internal lobe boundry and core.tif 5C:\Users\patrich\Desktop\lobe 1 with core.jpg6 C:\Users\patrich\Desktop\NAMBIA 2015\Aar Paper 2013\PRECAMBRIAN RES_ENVIRONMENT NAMIBIA\RANGEA\ARCHIVES\Figure 6 REVISED 2 Rangea F643 PT 600dpi JP format.tif7 C:\Users\patrich\Desktop\Figure 3 REVISED Rangea event beds outline dorsal PT 600dpi .tif8