Turtles as diapsid reptiles (original) (raw)

Nature volume 384, pages 453–455 (1996)Cite this article

Abstract

THE traditional classification of reptiles is based on a single key character, the presence and style of fenestration in the temporal region of the skull. Snakes, lizards, crocodiles, dinosaurs and others are 'diapsids', in that they have (at least primitively) two holes in the temporal region. Reptiles in which the skull is completely roofed, with no temporal fenestration, are the 'anapsids'. These include many Palaeozoic forms such as captorhinomorphs, procolophonids and pareiasaurs, but also include Testudines (turtles and tortoises). Consistent with this assumption, recent analyses of the affinities of Testudines have included Palaeozoic taxa only, placing them as akin to captorhinomorphs1 or procolophonids2 or nested within pareiasaurs3,4. Here we adopt a broader perspective, adding a range of Mesozoic and extant taxa to the analysis. Our result robustly supports the diapsid affinities of turtles, and so requires reassessment of the use of turtles as 'primitive' reptiles in phylogenetic reconstruction. More generally, it illustrates the difficulties of treating groups, such as the Testudines, that have extant members with peculiar morphologies that mask phylogenetic affinity; the hazards of relying on key characters such as temporal fenestration, which may mislead; the problems of outgroup choice for wide-ranging, inclusive analyses that include data from Recent and extinct groups; and the difficulties of judging the value of parsimony when applied to such inclusive analyses.

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References

  1. Gaffney, E. S. & Meylan, P. A. in The Phytogeny and Classification of the Tetrapods Vol. 1 (ed. Benton, M. J.) 157–219 (Clarendon, Oxford, 1988).
    Google Scholar
  2. Laurin, M. & Reisz, R. R. Zool. J. Linn. Soc. 113, 165–223 (1995).
    Article Google Scholar
  3. Lee, M. S. Y. Biol. Rev. 70, 459–547 (1995).
    Article Google Scholar
  4. Lee, M. S. Y. Nature 379, 812–815 (1996).
    Article ADS CAS Google Scholar
  5. Williston, S. W. J. Geol. 25, 411–421 (1917).
    Article ADS Google Scholar
  6. Rieppel, O. Zool. J. Linn. Soc. 98, 27–62 (1990).
    Article Google Scholar
  7. Gaffney, E. S. Bull. Am. Mus. Nat. Hist. 194, 1–263 (1990).
    Google Scholar
  8. Laurin, M. & Reisz, R. R. Biol. J. Linn. Soc. 113, 165–223 (1995).
    Article Google Scholar
  9. Laurin, M. Zool. J. Linn. Soc. 101, 59–95 (1991).
    Article Google Scholar
  10. deBraga, M. & Reisz, R. R. Palaeontology 38, 199–212 (1995).
    Google Scholar
  11. Sues, H.-D. J. Vert. Paleont. 7, 138–144 (1987).
    Article Google Scholar
  12. Burke, A. C. J. Morphol. 199, 363–378 (1989).
    Article Google Scholar
  13. Gauthier, J. A., Kluge, A. G. & Rowe, T. Cladistics 4, 104–209 (1988).
    Article Google Scholar
  14. Lakjer, T. Studien über die Trigeminus-versorgte Kaumuskulatur der Sauropsiden (C. A. Reitzel, Copenhagen, 1926).
    Google Scholar
  15. Goodrich, E. S. Proc. R. Soc. Lend. B 89, 261–276 (1916).
    Article ADS Google Scholar
  16. Broom, R. Bull. Am. Mus. Nat. Hist. 51, 39–65 (1924).
    Google Scholar
  17. Donoghue, M. J., Doyle, J. A., Gauthier, J. A., Kluge, A. G. & Rowe, T. Annu. Rev. Ecol. Syst. 20, 431–460 (1989).
    Article Google Scholar
  18. Cope, E. D. Trans. Am. Phil. Soc. 17, 11–26 (1892).
    Article Google Scholar
  19. Rieppel, O. Fieldiana (Geol.) 28, 1–85 (1994).
    Google Scholar
  20. Rieppel, O. Zoology 98, 298–308 (1995).
    Google Scholar
  21. Rieppel, O. Fieldiana (Zool.) 68, 1–25 (1992).
    Google Scholar
  22. Rieppel, O. J. Zool. 231, 487–509 (1993).
    Article Google Scholar
  23. DeBeer, G. The Development of the Vertebrate Skull (Clarendon, Oxford, 1937).
    Google Scholar
  24. Rieppel, O. Zool. J. Linn. Soc. 109, 301–325 (1993).
    Article Google Scholar
  25. Shubin, N. H. & Alberch, P. Evol. Biol. 20, 319–387 (1986).
    Google Scholar
  26. Sewertzoff, A. N. Bull. Soc. Imp. Nat. Moscou 21, 1–430 (1908).
    Google Scholar
  27. Rieppel, O. J. Vert. Paleont. 13, 31–47 (1993).
    Article Google Scholar
  28. Lee, M. S. Y. Proc. R. Soc. Lond. B 263, 111–117 (1996).
    Article ADS Google Scholar

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Authors and Affiliations

  1. Department of Geology, The Field Museum, Chicago, Illinois, 60605, USA
    O. Rieppel
  2. Department of Zoology, Erindale College, University of Toronto, Mississauga, Ontario, L5L 1C6, Canada
    M. deBraga

Authors

  1. O. Rieppel
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  2. M. deBraga
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Rieppel, O., deBraga, M. Turtles as diapsid reptiles.Nature 384, 453–455 (1996). https://doi.org/10.1038/384453a0

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