Chinese Science Bulletin

, Volume 58, Issue 16, pp 1931–1935

Tooth loss and alveolar remodeling in Sinosaurus triassicus (Dinosauria: Theropoda) from the lower jurassic strata of the Lufeng Basin, China


    • Department of Biological SciencesUniversity of Alberta
    • School of the Earth Sciences and ResourcesChina University of Geosciences
  • Phil R. Bell
    • Pipestone Creek Dinosaur Initiative
  • Bruce M. Rothschild
    • Division of Vertebrate Paleontology, Natural History Museum and Biodiversity Research InstituteUniversity of Kansas
  • Hao Ran
    • Ministry of EducationKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University)
  • JianPing Zhang
    • School of the Earth Sciences and ResourcesChina University of Geosciences
  • ZhiMing Dong
    • Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences
  • Wei Zhang
    • Department of Computer EngineeringChengdu Electromechanical College
  • Philip J. Currie
    • Department of Biological SciencesUniversity of Alberta
Open AccessArticle Geology

DOI: 10.1007/s11434-013-5765-7

Cite this article as:
Xing, L., Bell, P.R., Rothschild, B.M. et al. Chin. Sci. Bull. (2013) 58: 1931. doi:10.1007/s11434-013-5765-7


Pathological or traumatic loss of teeth often results in the resorption and remodeling of the affected alveoli in mammals. However, instances of alveolar remodeling in reptiles are rare. A remodeled alveolus in the maxilla of the Chinese theropod Sinosaurus (Lower Jurassic Lower Lufeng Formation) is the first confirmed example of such dental pathology in a dinosaur. Given the known relationship between feeding behavior and tooth damage in theropods (teeth with spalled enamel, tooth crowns embedded in bone) and the absence of dentary, maxillary, and premaxillary osteomyelitis, traumatic loss of a tooth is most likely the cause of alveolar remodeling. Based on the extent of remodeling, the injury and subsequent tooth loss were non-fatal in this individual.


alveolar remodelingpaleopathologySinosaurusLufeng BasinChina
Download to read the full article text

Copyright information

© The Author(s) 2013