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Skull of the large non-macrostomatan snake Yurlunggur from the Australian Oligo-Miocene

Nature volume 439, pages 839–842 (2006)Cite this article

Abstract

Understanding the origin and early evolution of snakes from lizards depends on accurate morphological knowledge of the skull in basal lineages, but fossil specimens of archaic snakes have been rare, and either fragmentary or difficult to study as a result of compression by enclosing sediments1,2,3,4,5,6. A number of Cenozoic fossil snakes from Australia have vertebral morphology diagnostic of an extinct group, Madtsoiidae, that was widespread in Gondwana from mid-Cretaceous (Cenomanian) to Eocene times, and also reached Europe in the late Cretaceous period3,7,8,9,10,11. Despite this long history, only about half the skull is known from the best-known species Wonambi naracoortensis7,11,12,13, and the few known cranial elements of other species have added little further evidence for phylogenetic relationships10,14,15,16,17,18,19. Conflicting hypotheses have been proposed for their relationships and evolutionary significance, either as basal ophidians with many ancestral (varanoid- or mosasaur-like) features, or advanced (macrostomatan) alethinophidians of little relevance to snake origins3,4,7,11,12,13,14,15,20. Here I report two partial skeletons referred to Yurlunggur8, from the late Oligocene and early Miocene of northern Australia, which together represent almost the complete skull and mandible. The exceptionally preserved skulls provide new evidence linking Yurlunggur with Wonambi and other madtsoiids, falsifying predictions of the macrostomatan hypothesis, and supporting the exclusion of Madtsoiidae from the clade including all extant snakes.

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Figure 1: Yurlunggur sp. or spp. (Madtsoiidae), parts of two skulls from Riversleigh, Queensland, Australia.
Figure 2: Phylogenetic relationships of extant and extinct snakes (Ophidia).

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References

  1. Estes, R., Frazzetta, T. H. & Williams, E. E. Studies on the fossil snake Dinilysia patagonica Woodward: Part 1. Cranial morphology. Bull. Mus. Comp. Zool. Harvard 140, 25–74 (1970)

    Google Scholar 

  2. Lee, M. S. Y. & Caldwell, M. W. Anatomy and relationships of Pachyrhachis problematicus, a primitive snake with hindlimbs. Phil. Trans. R. Soc. Lond. B 353, 1521–1552 (1998)

    Article  Google Scholar 

  3. Rage, J.-C. & Werner, C. Mid-Cretaceous (Cenomanian) snakes from Wadi Abu Hashim, Sudan: The earliest snake assemblage. Palaeontol. Afr. 35, 85–110 (1999)

    Google Scholar 

  4. Coates, M. & Ruta, M. Nice snake, shame about the legs. Trends Ecol. Evol. 15, 503–507 (2000)

    Article  CAS  Google Scholar 

  5. Caldwell, M. W. & Albino, A. Exceptionally preserved skeletons of the Cretaceous snake Dinilysia patagonica Woodward, 1901. J. Vertebr. Paleontol. 22, 861–866 (2002)

    Article  Google Scholar 

  6. Rieppel, O., Zaher, H., Tchernov, E. & Polcyn, M. J. The anatomy and relationships of Haasiophis terrasanctus, a fossil snake with well-developed hind limbs from the mid-Cretaceous of the Middle East. J. Paleontol. 77, 536–558 (2003)

    Google Scholar 

  7. Barrie, D. J. Skull elements and associated remains of the Pleistocene boid snake Wonambi naracoortensis. Mem. Queensl. Mus. 28, 139–151 (1990)

    Google Scholar 

  8. Scanlon, J. D. A new large madtsoiid snake from the Miocene of the Northern Territory. Beagle Rec. N. Territory Mus. Arts Sci. 9, 49–60 (1992)

    Google Scholar 

  9. Scanlon, J. D. Madtsoiid snakes from the Eocene Tingamarra Fauna of eastern Queensland. Kaupia: Darmst. Beitr. Naturgeschichte 3, 3–8 (1993)

    Google Scholar 

  10. Scanlon, J. D. Nanowana gen. nov., small madtsoiid snakes from the Miocene of Riversleigh: sympatric species with divergently specialised dentition. Mem. Queensl. Mus. 41, 393–412 (1997)

    Google Scholar 

  11. Scanlon, J. D. & Lee, M. S. Y. The Pleistocene serpent Wonambi and the early evolution of snakes. Nature 403, 416–420 (2000)

    Article  ADS  CAS  Google Scholar 

  12. Rieppel, O., Kluge, A. G. & Zaher, H. Testing the phylogenetic relationships of the Pleistocene snake Wonambi naracoortensis Smith. J. Vertebr. Paleontol. 22, 812–829 (2002)

    Article  Google Scholar 

  13. Scanlon, J. D. Cranial morphology of the Plio-Pleistocene giant madtsoiid snake Wonambi naracoortensis. Acta Palaeontol. Pol. 50, 139–180 (2005)

    Google Scholar 

  14. Rage, J.-C. Fossil snakes from the Paleocene of São José de Itaboraí, Brazil. Part I. Madtsoiidae, Aniliidae. Palaeovertebrata 27, 109–144 (1998)

    Google Scholar 

  15. Lee, M. S. Y. & Scanlon, J. D. Snake phylogeny based on osteology, soft anatomy and behaviour. Biol. Rev. 77, 333–402 (2002)

    Article  Google Scholar 

  16. Scanlon, J. D. Studies in the Palaeontology and Systematics of Australian Snakes Thesis, Univ. New South Wales (1996)

    Google Scholar 

  17. Scanlon, J. D. & Lee, M. S. Y. On varanoid-like dentition in primitive snakes (Madtsoiidae). J. Herpetol. 36, 100–106 (2002)

    Article  Google Scholar 

  18. Scanlon, J. D. The basicranial morphology of madtsoiid snakes (Squamata, Ophidia) and the earliest Alethinophidia (Serpentes). J. Vertebr. Paleontol. 23, 971–976 (2003)

    Article  Google Scholar 

  19. Scanlon, J. D. Australia's oldest known snakes: Patagoniophis, Alamitophis, and cf. Madtsoia (Squamata: Madtsoiidae) from the Eocene of Queensland. Mem. Queensl. Mus. 51, 215–235 (2005)

    Google Scholar 

  20. McDowell, S. B. in Snakes: Ecology and Evolutionary Biology (eds Seigel, R. A., Collins, J. T. C. & Novak, S. S.) 1–50 (Macmillan, New York, 1987)

    Google Scholar 

  21. Archer, M., Hand, S. J., Godthelp, H. & Creaser, P. Correlation of the Cainozoic sediments of the Riversleigh World Heritage fossil property, Queensland, Australia. Mém. Trav. École Prat. Hautes Études Inst. Montpellier 21, 131–152 (1997)

    Google Scholar 

  22. Simpson, G. G. A new fossil snake from the Notostylops beds of Patagonia. Bull. Am. Mus. Nat. Hist. 67, 1–22 (1933)

    Google Scholar 

  23. Scanlon, J. D. First known axis vertebra of a madtsoiid snake (Yurlunggur camfieldensis) and remarks on the neck of snakes. Beagle Rec. N. Territory Mus. Arts Sci. 20, 207–215 (2004)

    Google Scholar 

  24. Scanlon, J. D. Montypythonoides: the Miocene snake Morelia riversleighensis (Smith and Plane, 1985) and the geographical origin of pythons. Mem. Assoc. Australas. Palaeontol. 25, 1–35 (2001)

    Article  Google Scholar 

  25. Scanlon, J. D., Lee, M. S. Y. & Archer, M. Mid-Tertiary elapid snakes (Squamata, Colubroidea) from Riversleigh, northern Australia: early steps in a continent-wide adaptive radiation. Geobios 36, 573–601 (2003)

    Article  Google Scholar 

  26. Cundall, D. Feeding behaviour in Cylindrophis and its bearing on the evolution of alethinophidian snakes. J. Zool. (Lond.) 237, 353–376 (1995)

    Article  Google Scholar 

  27. Cundall, D. & Rossman, D. S. Cephalic anatomy of the rare Indonesian snake Anomochilus weberi. Zool. J. Linn. Soc. 109, 235–273 (1993)

    Article  Google Scholar 

  28. Estes, R., de Queiroz, K. & Gauthier, J. A. in Phylogenetic Relationships of the Lizard Families (eds Estes, R. & Pregill, G.) 119–281 (Stanford Univ. Press, Stanford, California, 1988)

    Google Scholar 

  29. Rieppel, O. & Zaher, H. The braincases of mosasaurs and Varanus, and the relationships of snakes. Zool. J. Linn. Soc. 129, 489–514 (2000)

    Article  Google Scholar 

  30. Swofford, D. L. PAUP* Version 4—Phylogenetic Analysis Using Parsimony (*and Other Methods) (Sinauer, Sunderland, Massachusetts, 1999)

    Google Scholar 

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Acknowledgements

I thank M. Archer, H. Godthelp, A. Gillespie and K. Black (University of New South Wales (UNSW), Sydney) and B. Chambers (Riversleigh Fossil Centre, Mount Isa) for access to and initial preparation of Riversleigh fossils collected by the UNSW team; M. Lee, M. Hutchinson, T. Flannery and J. McNamara (South Australian Museum) for access to facilities and materials; and J.-C. Rage, Z. Szyndlar, M. Lee, M. Kearney, C. Davidson and E. Chitra for discussions and comments. Financial support was provided by the Australian Research Council and the Australian Geographic Society.

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Authors and Affiliations

  1. Riversleigh Fossil Centre, Outback at Isa, PO Box 1094, Mount Isa, Queensland, 4825, Australia

    John D. Scanlon

  2. South Australian Museum, North Terrace, Adelaide, South Australia, 5000, Australia

    John D. Scanlon

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Correspondence to John D. Scanlon.

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Supplementary Notes

This file contains Supplementary Data and Supplementary Methods in seven separate sections: 1) Revised diagnoses (of taxa Madtsoiidae and Yurlunggur); 2) Additional cranial material, and condition of skull QMF45391; 3) Morphological character list (modified from Lee and Scanlon 2002); 4) Data matrix (Nexus format); 5) Main analyses (parsimony, Bremer and bootstrap analyses in PAUP*); 6) Other analyses; 7) Additional references (those cited in SI but not in the print version of the paper). (DOC 798 kb)

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Scanlon, J. Skull of the large non-macrostomatan snake Yurlunggur from the Australian Oligo-Miocene. Nature 439, 839–842 (2006). https://doi.org/10.1038/nature04137

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