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The origin of the internal nostril of tetrapods

Naturevolume 432, pages94–97 (2004)Cite this article

Abstract

The choana, a unique ‘internal nostril’ opening from the nasal sac into the roof of the mouth, is a key part of the tetrapod (land vertebrate) respiratory system. It was the first component of the tetrapod body plan to evolve, well before the origin of limbs, and is therefore crucial to our understanding of the beginning of the fish–tetrapod transition. However, there is no consensus on the origin of the choana despite decades of heated debate1,2,3,4,5,6,7,8,9; some have claimed that it represents a palatally displaced external nostril4,6, but others have argued that this is implausible because it implies breaking and rejoining the maxillary–premaxillary dental arcade and the maxillary branch of nerve V2,6. The fossil record has not resolved the dispute, because the choana is fully developed in known tetrapod stem-group members8,10,11. Here we present new material ofKenichthys, a 395-million-year-old fossil fish from China12,13,14, that provides direct evidence for the origin of the choana and establishes its homology: it is indeed a displaced posterior external nostril that, during a brief transitional stage illustrated byKenichthys, separated the maxilla from the premaxilla.

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Figure 1: Nostril positions on the heads of sarcopterygian fishes.
Figure 2: Photographs ofKenichthys campbelli specimens.
Figure 3: Morphology ofKenichthys.

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References

  1. Jarvik, E. On the structure of the snout of crossopterygians and lower gnathostomes in general.Zool. Bidrag Uppsala21, 235–675 (1942)

    Google Scholar 

  2. Panchen, A. L. The nostrils of choanate fishes and early tetrapods.Biol. Rev.42, 374–420 (1967)

    Article CAS  Google Scholar 

  3. Jarvik, E.Basic Structure and Evolution of VertebratesVol. 1 (Academic, London, 1980)

    Google Scholar 

  4. Rosen, D. E. et al. Lungfishes, tetrapods, paleontology, and plesiomorphy.Bull. Am. Mus. Nat. Hist.167, 157–276 (1981)

    Google Scholar 

  5. Maisey, J. G. Heads and tails: a chordate phylogeny.Cladistics2, 201–256 (1986)

    Article  Google Scholar 

  6. Panchen, A. L. & Smithson, T. R. Character diagnosis, fossils and the origin of tetrapods.Biol. Rev.62, 341–438 (1987)

    Article  Google Scholar 

  7. Forey, P. L. inThe Biology and Evolution of Lungfishes (eds Bemis, W. E., Burggren, W. W. & Kemp, N.) 39–74 (Alan R. Liss, New York, 1987)

    Google Scholar 

  8. Schultze, H.-P. inOrigins of the Higher Groups of Tetrapods: Controversy and Consensus (eds Schultze, H.-P. & Trueb, L.) 29–67 (Cornell Univ. Press, Ithaca, 1991)

    Google Scholar 

  9. Ahlberg, P. E. A re-examination of sarcopterygian interrelationships, with special reference to the Porolepiformes.Zool. J. Linn. Soc.103, 241–287 (1991)

    Article  Google Scholar 

  10. Long, J. A., Campbell, K. S. W. & Barwick, R. E. Osteology and functional morphology of the osteolepiform fishGogonasus andrewsae Long, 1985, from the Upper Devonian Gogo Formation, Western Australia.Rec. W. Aust. Mus. Suppl.53, 1–89 (1997)

    Google Scholar 

  11. Ahlberg, P. E. & Johanson, Z. Osteolepiforms and the ancestry of tetrapods.Nature395, 792–794 (1998)

    Article ADS  Google Scholar 

  12. Chang, M. M. & Zhu, M. A new Middle Devonian osteolepidid from Qujing, Yunnan.Mem. Assoc. Australas. Palaeontol.15, 183–198 (1993)

    Google Scholar 

  13. Zhu, M. & Wang, J.-Q. On the Early–Middle Devonian boundary in Qujing, Yunnan.Acta Stratigr. Sin.20, 58–63 (1996)

    Google Scholar 

  14. Chang, M. M. & Yu, X. B. Reexamination of the relationship of Middle Devonian osteolepids—fossil characters and their interpretations.Am. Mus. Novitat.3189, 1–20 (1997)

    Google Scholar 

  15. Lebedev, O. A. Morphology of a new osteolepidid fish from Russia.Bull. Mus. Natl Hist. Nat. Paris17, 287–341 (1995)

    Google Scholar 

  16. Chang, M. M. .The Braincase of Youngolepis, a Lower Devonian Crossopterygian from Yunnan, South-western China Thesis, Stockholm Univ. (1982)

    Google Scholar 

  17. Tong-Dzuy, T. & Janvier, P. Les Vertébrés du Dévonien inférieur du Bac Bo oriental (provinces de Bac Thaï et Lang Son, Viêt Nam).Bull. Mus. Natl Hist. Nat. Paris12, 143–223 (1990)

    Google Scholar 

  18. Johanson, Z. & Ahlberg, P. E. A complete primitive rhizodont from Australia.Nature394, 569–572 (1998)

    Article ADS CAS  Google Scholar 

  19. Long, J. A. A new rhizodontiform fish from the Early Carboniferous of Victoria, Australia, with remarks on the phylogenetic position of the group.J. Vert. Paleontol.9, 1–17 (1989)

    Article  Google Scholar 

  20. Clement, G. Evidence for lack of choanae in the Porolepiformes.J. Vert. Paleontol.21, 795–802 (2001)

    Article  Google Scholar 

  21. Ahlberg, P. E., Clack, J. A. & Lukťevičs, E. Rapid braincase evolution betweenPanderichthys and the earliest tetrapods.Nature381, 61–64 (1996)

    Article ADS CAS  Google Scholar 

  22. Chang, M. M. & Yu, X. B. Structure and phylogenetic significance ofDiabolichthys speratus gen. et sp. nov., a new dipnoan-like form from the early Devonian of southeastern Yunnan, China.Proc. Linn. Soc. N.S.W.107, 171–184 (1984)

    Google Scholar 

  23. Zhu, M., Yu, X. B. & Ahlberg, P. E. A primitive sarcopterygian fish with an eyestalk.Nature410, 81–84 (2001)

    Article ADS CAS  Google Scholar 

  24. Bemis, W. E. & Grande, L. Early development of the actinopterygian head. I. External development and staging of the paddlefishPolyodon spathula.J. Morphol.213, 47–83 (1992)

    Article CAS  Google Scholar 

  25. Ashique, A. M., Fu, K. & Richman, J. M. Endogenous bone morphogenetic proteins regulate outgrowth and epithelial survival during avian lip fusion.Development129, 4647–4660 (2002)

    CAS PubMed  Google Scholar 

  26. Hu, D. & Helms, J. The role ofsonic hedgehog in normal and abnormal craniofacial morphogenesis.Development126, 4873–4884 (1999)

    CAS PubMed  Google Scholar 

  27. Zhang, Z. et al. Rescue of cleft palate inMsx1-deficient mice by transgenicBmp4 reveals a network of BMP and Shh signaling in the regulation of mammalian palatogenesis.Development129, 4135–4146 (2002)

    CAS PubMed  Google Scholar 

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Acknowledgements

We thank M. M. Chang for advice and discussions, M. Yang for artwork, and X. Lu for specimen preparation. This work was supported by the Special Funds for Major State Basic Research Projects of China and the Chinese Foundation of Natural Sciences. P.E.A. thanks the Royal Society and Chinese Academy of Sciences for supporting his visit to Beijing in 2002 through their exchange programme.

Author information

Authors and Affiliations

  1. Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, P.O. Box 643, Beijing, 100044, China

    Min Zhu

  2. Department of Evolutionary Organismal Biology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18A, SE-752 36, Uppsala, Sweden

    Per E. Ahlberg

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  1. Min Zhu

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  2. Per E. Ahlberg

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Corresponding author

Correspondence toMin Zhu.

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The authors declare that they have no competing financial interests.

Supplementary information

Supplementary Methods

Summary of the phylogenetic analysis. The character list. The data matrix. The consensus tree of 18 most parsimonious trees. The analysis based on a new expanded character suite confirms thatKenichthys is the most basal member of the tetrapod stem group. (DOC 709 kb)

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Zhu, M., Ahlberg, P. The origin of the internal nostril of tetrapods.Nature432, 94–97 (2004). https://doi.org/10.1038/nature02843

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