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Paläontologische Zeitschrift

, Volume 85, Issue 1, pp 109–111 | Cite as

Evidence for a venomous Sinornithosaurus

  • Enpu Gong
  • Larry D. Martin
  • David A. BurnhamEmail author
  • Amanda R. Falk
Reply

Recent work (Fry et al. 2008) showing the widespread presence of venom glands in lepidosaurs (including the common iguana) demonstrates that they are not “uncommon”. Both maxillary and mandibular glands were originally present and many lizards have retained their maxillary glands even though the mandibular glands are the primary source of toxin. Apparently, venom was present at the base of the lepidosaur radiation, and might be expected in a sister group (archosaurs). In modern reptilian taxa, teeth with pronounced labial grooves have proved to be venomous, and this type of tooth has often been suggested as indicating venom delivery in extinct taxa including conodonts (Szaniawski 2009) and synapsids (Hotton 1991). Gianechini et al. (2010) make a fundamental error by assuming that archosaurs with grooved teeth had no venomous taxa in their ancestry and were not venomous themselves. They support speculation about an extinct genus and additional speculation about other extinct genera. We...

Keywords

Mandibular Gland Venom Gland Extinct Taxon Venomous Animal Extinct Genus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Fry, B.G., H. Scheib, L. van der Weerd, B. Young, J. McNaughtan, S.F.R. Ramjan, N. Vidal, R.E. Poelmann, and J.A. Norman. 2008. Evolution of an arsenal: structural and functional diversification of the venom system in the advanced snakes (Caenophidia). Molecular & Cellular Proteomics 7(2): 215–246.CrossRefGoogle Scholar
  2. Gianechini, F.A., F.L. Agnolín, and M.D. Ezcurra. 2010. A reassessment of the purportedly venom delivery system of the bird-like raptor Sinornithosaurus. Paläontologische Zeitschrift. doi: 10.1007/s12542-010-0074-9.Google Scholar
  3. Hotton III, N.C. 1991. The nature and diversity of synapsids: Prologue to the origin of mammals. In Origins of higher groups of tetrapods, ed. H.-P. Schultze, and L. Trueb, 598–634. New York: Cornell University Press.Google Scholar
  4. Nydam, R.L. 2000. A new taxon of helodermatid-like lizard from the Albian-Cenomanian of Utah. Journal of Vertebrate Paleontology 20: 285–294.CrossRefGoogle Scholar
  5. Szaniawski, H. 2009. The earliest known venomous animals recognized among conodonts. Acta Palaeontologica Polonica 54: 669–676.CrossRefGoogle Scholar
  6. Xu, X., and X.-C. Wu. 2001. Cranial morphology of Sinornithosaurus millenii Xu et al. 1999 (Dinosauria: Theropoda: Dromaeosauridae) from the Yixian formation of Liaoning, China. Canadian Journal of Earth Sciences 38: 1739–1752.CrossRefGoogle Scholar
  7. Xu, X., X.-L. Wang, and X.-C. Wu. 1999. A dromaeosaurid dinosaur with a filamentous integument from the Yixian Formation of China. Nature 401: 262–266.CrossRefGoogle Scholar
  8. Zheng, X. 2009. Niaolei Qiyuan. Jinan City, China: Shandong Science and Technology Publishing House Press. [The Origin of Birds].Google Scholar

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Enpu Gong
    • 1
  • Larry D. Martin
    • 2
  • David A. Burnham
    • 2
    Email author
  • Amanda R. Falk
    • 3
  1. 1.Department of GeologyNortheastern UniversityLiaoningChina
  2. 2.Division of Vertebrate Paleontology, Biodiversity Institute, Natural History MuseumUniversity of KansasLawrenceUSA
  3. 3.Department of GeologyUniversity of KansasLawrenceUSA

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