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South African Journal of Science

On-line version ISSN 1996-7489
Print version ISSN 0038-2353

S. Afr. j. sci. vol.103 n.1-2 Pretoria Jan./Feb. 2007




Extended procolophonoid reptile survivorship after the end-Permian extinction



Jennifer BothaI; Sean P. ModestoII; Roger M.H. SmithIII

IKaroo Palaeontology, National Museum, P.O. Box 266, Bloemfontein 9300, South Africa
IIDepartment of Biology, Cape Breton University, Sydney, Nova Scotia, B1P 6L2, Canada
IIIIziko South African Museum, P. O. Box 61, Cape Town 8000, South Africa




The end-Permian extinction event is regarded as the most severe of the five major extinction events in the history of life. Recent work in the Karoo Basin of South Africa suggests that the extinctions at the Permo-Triassic boundary (PTB) may have been followed by a second pulse of extinctions, one that claimed the few species that crossed the PTB and thus survived the first extinction pulse. We report here a new specimen of the procolophonoid reptile, Sauropareion anoplus, which was known heretofore only from a single specimen from Lower Triassic strata of the Palingkloof Member, Balfour Formation. The new specimen comes from the lower part of the overlying Katberg Formation and serves as the last appearance datum for the stratigraphic range of S. anoplus. It indicates that S. anoplus survived the second pulse of PTB extinctions and reinforces the hypothesis that procolophonoid evolution was not seriously perturbed by extinctions that mark the beginning of the Triassic Period.



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1. Bowring S.A., Erwin D.H., Jin Y.G., Martin M.W., Davidek K. and Wang W. (1998). U/Pb zircon geochronology and tempo of the end-Permian mass extinction. Science 280, 1039-1045.         [ Links ]

2. Sepkoski J.J. Jr. (1986). Phanerozoic overview of mass extinctions. In Patterns and Processes in the History of Life, eds D.M. Raup and D. Jablonski, pp. 277-295. Springer, Berlin.         [ Links ]

3. Erwin D. (1994). The Permo-Triassic extinction. Nature 367, 231-236.         [ Links ]

4. Looy C.V., Twitchett R.J., Dilcher D.L., van Kojnijnenberg-van Cittert J.H.A. and Visscher H. (2001). Life in the end-Permian dead zone. Proc. Natl Acad. Sci. USA 98, 7879-7883.         [ Links ]

5. Benton M.J. and Twitchett R.J. (2003). How to kill (almost) all life: the end-Permian extinction event. Trends Ecol. Evol. 18, 358-365.         [ Links ]

6. MacLeod G.K., Smith R.M.H., Koch P.L. and Ward P.D. (2000). Timing of mammal-like reptile extinctions across the Permian Triassic boundary in South Africa. Geology 28, 227-230.         [ Links ]

7. Smith R.M.H. andWard P.D. (2001). Pattern of vertebrate extinctions across an event bed at the Permian-Triassic boundary in the Karoo Basin of South Africa. Geol. Soc. Amer. 29, 1147-1150.         [ Links ]

8. Clark D.L., Wang C-Y., Orth C.S. and Gilmore J.S. (1986). Conodont survival and low iridium abundances across the Permian-Triassic boundary. Science 233, 984-986.         [ Links ]

9. Gruszczynski M., Halas S., Hoffman A. and Malkowksi K. (1989). A brachiopod calcite record of the oceanic carbon and oxygen isotope shifts at the Permian/Triassic transition. Nature 337, 64-68.         [ Links ]

10. Wignall P.B. and Twitchett R.J. (1996). Oceanic anoxia and the terminal Permian mass extinction. Science 272, 1155-1158.         [ Links ]

11. Dilkes D.W. (1998). The Early Triassic rhynchosaur Mesosuchus browni and the interrelationships of basal archosauromorph reptiles. Phil. Trans. R. Soc. Lond. B 353, 501-541.         [ Links ]

12. Retallack G.J. and Krull E.S. (1999). Landscape ecological shift at the Permian-Triassic boundary in Antarctica. Aust. J. Earth Sci. 46, 785-812.         [ Links ]

13. Sheldon N.D. and Retallack G.J. (2002). Low oxygen levels in earliest Triassic soils. Geol. Soc. Amer. 30, 919-922.         [ Links ]

14. Ward P.D., Montgomery D.R. and Smith R.M.H. (2000). Altered river morphology in South Africa related to the Permian-Triassic extinction. Science 289, 1741-1743.         [ Links ]

15. Modesto S., Sues H-D. and Damiani R. (2001). A new Triassic procolophonoid reptile and its implications for procolophonoid survivorship during the Permo-Triassic extinction event. Proc. R. Soc. Lond. B 268, 2047-2052.         [ Links ]

16. Modesto S.P., Damiani R. J., Neveling J. and Yates A.M. (2003). Anew Triassic owenettid parareptile and the Mother of Mass Extinctions. J. Vert. Paleont. 23, 715-719.         [ Links ]

17. Wang X., Zhang Z., Metcalfe I. and Foster C. (2002). Palynofloral assemblage across the terrestrial Permian-Triassic boundary at Dalongkou, Xinjiang, NW China. In First International Palaeontological Congress, eds G.A. Brock and J.A. Talent, pp. 166-167. Geological Society of Australia, Sydney.         [ Links ]

18. Benton M.J. (2003). When Life Nearly Died: The greatest mass extinction of all time. Thames and Hudson, London.         [ Links ]

19. Tverdokhlebov V.P., Tverdokhlebova G.I., Surkov M.V. and Benton M.J. (2003). Tetrapod localities from the Triassic of the SE of European Russia. Earth Sci. Rev. 60, 1-66.         [ Links ]

20. Benton M.J., Tverdokhlebov V.P. and Surkov M.V. (2004). Ecosystem remodeling among vertebrates at the Permian-Triassic boundary in Russia. Nature 432, 97-100.         [ Links ]

21. Retallack G.J. (1995). Permian-Triassic life crisis on land. Science 267, 77-80.         [ Links ]

22. Retallack G.J., Seyedolali A., Krull E.S., Holser WT., Ambers, C.P and Kyte F.T (1998). Search for evidence of impact at the Permian-Triassic boundary in Antarctica and Australia. Geology 26, 979-982.         [ Links ]

23. Retallack G.J., Smith R.M.H. and Ward P.D. (2003). Vertebrate extinction across Permian-Triassic boundary in Karoo Basin, South Africa. Geol. Soc. Amer. Bull. 115, 1133-1152.         [ Links ]

24. Shu O. and Norris G. (1999). Earliest Triassic (Induan) spores and pollen from the Junggar Basin, Xinjiang, northwestern China. Rev. Palaeobot. Palynol. 106, 1-56.         [ Links ]

25. Metcalfe I., Nicoll R.S., Mundil R., Foster C., Glen J., Lyons J., Wang X., Wang C-Y., Renne PR., BlackL., Qu X. and Mao X. (2001). The Permian-Triassicboundary and mass extinction in China. Episodes 24, 239-244.         [ Links ]

26. Botha J. and Smith R. (2006). Rapid vertebrate recuperation in the Karoo Basin of South Africa following the End-Permian extinction. J. Afr. Earth Sci. 45, 502-514.         [ Links ]

27. Smith R.M.H. and Botha J. (2005). The recovery of terrestrial vertebrate diversity in the South African Karoo Basin after the End-Permian extinction. C. R. Palevol. 4, 555-568.         [ Links ]

28. Botha J. and Smith R. (in press). Lystrosaurus species composition across the Permian-Triassic boundary in South Africa. Lethaia.         [ Links ]

29. Reisz R.R. and Laurin M. (1991). Owenetta and the origin of turtles. Nature 349, 324-326.         [ Links ]

30. Modesto S.P, Damiani R.J. and Sues H-D. (2002). A reappraisal of Coletta seca, a basal procolophonoid reptile from the Lower Triassic of South Africa. Palaeontology 45, 883-895.         [ Links ]

31. Bulanov V.V. (2002). New data on procolophons from the Permian of Eastern Europe. Paleont. J. 36, 525-530.         [ Links ]

32. Neveling J. (2004). Stratigraphic and sedimentological investigation of the contact between the Lystrosaurus and the Cynognathus assemblage zones (Beaufort Group: Karoo Supergroup). Bulletin 137, Council for Geoscience, Pretoria.         [ Links ]

33. Catuneanu O., Wopfner H., Eriksson P.G., Cairncross B., Rubidge B.S., Smith R.M.H. and Hancox P.J. (2005). The Karoo basins of south-central Africa. J. Afr. Earth Sci. 43, 211-253.         [ Links ]

34. Modesto S.P. and Damiani R. (in press). The procolophonoid reptile Sauropareion anoplus from the lowermost Triassic of South Africa. J. Vert. Paleont.         [ Links ]

35. Abdala F., Cisneros J.C. and Smith R.M.H. (2006). Faunal aggregation in the Early Triassic Karoo Basin: earliest evidence of shelter-sharing behaviour among tetrapods? Palaios 21, 507-512.         [ Links ]



Received 22 September 2006.
Accepted 10 January 2007.



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