First discovery of monotremes in South America


UNTIL now, the egg-laying monotremes were only known from the Australian continent, where they have lived since the early Cretaceous period to the present1. Here we report the first monotreme from outside the Australian continent, an ornithorhyn-chid, from sediments of late early Palaeocene age in Patagonia, southern Argentina. This discovery demonstrates the Gondwanan nature of monotremes and supports the hypothesis that the Patagonian Terrane of southern South America had a biotic history distinct from that of the rest of the continent.

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  1. 1

    Archer, M., Flannery, T. F., Ritchie, A. & Molnar, R. E. Nature 318, 363–366 (1985).

    ADS  Article  Google Scholar 

  2. 2

    Archer, M., Murray, P., Hand, S. J. & Godthelp, H. in Mammal Phytogeny (eds Szalay, F., Novacek, M. & McKenna, M.) (Springer, New York, in the press).

  3. 3

    Archer, M., Jenkins, F. A. Jr., Hand, S. J., Godthelp, H. & Murray, P. Aust. Zool. Rev. (in the press).

  4. 4

    Every, R. G. A New Terminology for Mammalian Teeth Founded on the Phenomenon of Thegosis (Pegasus, Christchurch, 1972).

    Google Scholar 

  5. 5

    Lester, K. S. & Archer, M. Anat. Embryol. 174, 145–151 (1986).

    CAS  Article  Google Scholar 

  6. 6

    Borde, A. thesis, Univ. London (1964).

  7. 7

    Legarreta, L. A., Uliana, M. A. & Torres, M. A. in Actas II Simp. sobre el Terciario de Chile:Procesos y Productos de Depositación en el Ámbito Andino 135–176 Univ. de Concepción, Chile, 1991).

    Google Scholar 

  8. 8

    Méndez, I. A. Rev. Asoc. Geol. Arg. 21, 127–160 (1966).

    Google Scholar 

  9. 9

    Maziuk, V. Rev. Mus. La Plata, nueva serie, sectión Palaeont 5, 197–258 (1967).

    Google Scholar 

  10. 10

    Pascual, R. & Ortiz-Jaureguizar, E. In Facies y Fósiles de Bolivia Vol. 2 (ed. Suárez-Soruco, R.) 3–4 (Rev. Tecn. Yac. Petrol. Bolivia, 1991).

    Google Scholar 

  11. 11

    Marshall, L. G. & de Muizon, C. Nat. Geog. Res. 4, 23–55 (1988).

    Google Scholar 

  12. 12

    Pascual, R. & Ortiz-Jaureguizar, E. J. hum. Evol. 19, 22–60 (1990).

    Article  Google Scholar 

  13. 13

    Kraus, D. E. & Bonaparte, J. F. J. vert. Paleont. 10, 31A (1990).

    Google Scholar 

  14. 14

    Petriella, B. T. P. & Archangelsky, S. in Actas I Congr. Arg. Paleont. Bioestrat. 2, 257–270 (Tucumán, Argentina, 1975).

    Google Scholar 

  15. 15

    Zinsmeister, W. J. in Historical Biogeography, Plate Tectonic and the Changing Environments (eds J. Gray & A. J. Boucot) 349–355 (Proc. 37th Ann. Biol. Colloq., Oregon University Press, 1979).

    Google Scholar 

  16. 16

    Zinsmeister, W. J. J. Paleont. 36, 84–102 (1982).

    Google Scholar 

  17. 17

    Vilas, J. F. & Valencio, D. in Acta V. Congreso Latinoam. Geol. 3, 743–758 (1982).

    Google Scholar 

  18. 18

    Case, J. A. Geol. Soc. Am. 169, 523–530 (1988).

    Google Scholar 

  19. 19

    Pascual, R. & Bondesio, P. in Actas VI Congr. Geol. Arg. 1, 565–577 (Buenos Aires, Argentina, 1975).

    Google Scholar 

  20. 20

    Ramos, V. A. Am. Scient. 77, 444–450 (1989).

    ADS  Google Scholar 

  21. 21

    Crisci, J. V., Cigliano, M. M., Morrone, J. J. & Roig-Junent, S. Syst. Zool. 40, 152–171 (1991).

    Article  Google Scholar 

  22. 22

    Bonaparte, J. F. in Symp. Evol. Vert. Mesoz. Actas 2 (ed. Bonaparte, J. F.) 63–95 (IV Congr. Arg. Paleont. & Bioestrat., Mendoza. Argentina, 1986).

    Google Scholar 

  23. 23

    Bonaparte, J. F. (ed.) Rev. Mus. Arg. Cs. Nat., Paleontología III(3), 103–178 (1987).

  24. 24

    Scillato-Yané, G. J. & Pascual, R. Ameghiniana 21, 173–76 (1985).

    Google Scholar 

  25. 25

    Pascual, R. & Ortiz-Jaureguizar, E. in Fossil Mammals and Evolution (eds Forsten, A., Fortelius, M. & Werdelin, L.) (Acta Zool. Fen. 191, in the press).

  26. 26

    Stehli, F. G. & Webb, S. D. (eds) The Great American Biotic Interchange, XVII and 532 (Plenum, 1985).

  27. 27

    Marshall, L. G., Hoffstetter, R. & Pascual, R. Paleovertebrata Montpellier, Mém. Extr. 1983, 1–93 (1983).

  28. 28

    Woodburne, M. O. & Tedford, R. H. Am. Mus. Novit. 2588, 1–11 (1975).

    Google Scholar 

  29. 29

    Westerman, M. & Edwards, D. Abstr. Symp. Monotreme Biol. (ed. Augee, M.) 27 (Roy. Zool. Soc. New South Wales, Sydney, 1991).

    Google Scholar 

  30. 30

    Kielan-Jaworowska, Z., Crompton, A. W. & Jenkins, F. A. Jr Nature 326, 871–873 (1987).

    ADS  Article  Google Scholar 

  31. 31

    Veevers, J. J. (ed.) Phanerozoic Earth History of Australia (Clarendon, Oxford, 1984).

  32. 32

    Szalay, F. in Carnivorous Marsupials (ed. Archer, M.) 621–640 (Roy. Zool. Soc. New South Wales, Sydney, 1982).

    Google Scholar 

  33. 33

    Aplin, K. & Archer, M. in Possums and Opossums: Studies in Evolution (ed. Archer, M.) XV–LXXII (Surrey Beatty and the Roy. Zool. Soc. NSW, Sydney, 1987).

    Google Scholar 

  34. 34

    Pascual, R. et al. Aust. Zool. Rev. (in the press).

  35. 35

    Griffiths, M., Wells, R. T. & Barrie, D. J. Aust. Mammal. 14, 87–101 (1991).

    Google Scholar 

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Pascual, R., Archer, M., Jaureguizar, E. et al. First discovery of monotremes in South America. Nature 356, 704–706 (1992).

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