A possible Early Cambrian chordate - Nature

1. Garstang, W. Q. J. microsc. Sci. 72, 51–187 (1928).

   Google Scholar 

2. Schaeffer, B. Evol. Biol. 21, 179–235 (1987).

   Article  Google Scholar 

3. Maisey, J. G. Cladistics 2, 201–256 (1986).

   Article  Google Scholar 

4. Jefferies, R. P. S. The Ancestry of the Vertebrates (British Museum Natural History, London,1986).

   Google Scholar 

5. Cripps, A. P. Zool. J. Linn. Soc. 100, 27–71 (1990).

   Article  Google Scholar 

6. Peterson, K. J. Lethaia 28, 25–38 (1995).

   Article  Google Scholar 

7. Conway Morris, S. (ed.) Atlas of the Burgess Shale (Palaeontological Association, London,1982).

8. Briggs, D. E. G., Erwin, D. H. & Collier, F. J. The Fossils of the Burgess Shale (Smithsonian Institution Press, Washington, 1994).

   Google Scholar 

9. Simonetta, A. M. & Insom, E. Boll. Zool. 60, 97–107 (1993).

   Article  Google Scholar 

10. Zhang, A. Kexue Tongbao 30, 1643–1647 (1985).

    CAS  Google Scholar 

11. Zhang, A. Scientia sin. B 30, 888–896 (1987).

    CAS  Google Scholar 

12. Hou, X.-G., Ramsköld, L. & Bergström, J. Zool. Scripta 20, 395–411 (1991).

    Article  Google Scholar 

13. Chen, J.-Y. & Erdtmann, B.-D. in The Early Evolution of Metazoa and the Significance of Problematic Taxa (eds Simonetta, A. M. & Conway Morris, S.) 57–76 (Cambridge Univ. Press, 1991).

    Google Scholar 

14. Dohrn, A. Mitt. Zool. Stat. Neapel 6, 1–92 (1886).

    Google Scholar 

15. Løvtrup, S. The Phylogeny of Vertebrata (Wiley, London, 1977).

    Google Scholar 

16. Blieck, A. Geobios 25, 101–113 (1992).

    Article  Google Scholar 

17. Gans, C. Biol. Rev. 64, 221–268 (1989).

    Article  CAS  Google Scholar 

18. Jarvik, E. in L'évolution dans sa Réalité et ses Diverses Modalités 35–64 (Fondation Singer-Polignac & Masson, Paris, 1988).

    Google Scholar 

19. Briggs, D. E. G. & Kear, A. J. Lethaia 26, 275–287 (1994).

    Article  Google Scholar 

20. Jollie, M. Zool. J. Linn. Soc. 75, 167–188 (1982).

    Article  Google Scholar 

21. Janvier, P. & Lund, R. J. vert. Paleont. 2, 407–413 (1983).

    Article  Google Scholar 

22. Lund, R. & Janvier, P. Geobios 19, 647–652 (1986).

    Article  Google Scholar 

23. Young, J. Z. The Life of Vertebrates 3rd edn (Clarendon, Oxford, 1981).

    Google Scholar 

24. Aldridge, R. J., Briggs, D. E. G., Smith, M. P., Clarkson, E. N. K. & Clarke, N. D. L. Phil. Trans. R. Soc. Lond. B 340, 405–421 (1993).

    Article  Google Scholar 

25. Gabbott, S. E., Aldridge, R. J. & Theron, J. N. Nature 374, 800–803 (1995).

    Article  ADS  CAS  Google Scholar 

26. Resser, C. E. & Howell, B. F. Bull. geol. Soc. Am. 49, 195–248 (1938).

    Article  Google Scholar 

27. Termier, G. & Termier, H. Évolution et Biocinèse (Masson, Paris. 1968).

    Google Scholar 

28. Conway Morris, S. Palaeontology, 36, 593–635 (1993).

    Google Scholar 

29. Gee, H. Nature 370, 504–505 (1994).

    Article  ADS  CAS  Google Scholar 

30. Briggs, D. E. G. & Clarkson, E. N. K. Lethaia 20, 107 (1987).

    Article  Google Scholar 

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