Microstructure of dental hard tissues in fossil and recent xenarthrans (Mammalia: Folivora and Cingulata).

  title={Microstructure of dental hard tissues in fossil and recent xenarthrans (Mammalia: Folivora and Cingulata).},
  author={Daniela C. Kalthoff},
  journal={Journal of morphology},
  volume={272 6},
A striking difference between xenarthrans and other mammals is the complete loss of tooth enamel in all members but the earliest armadillos. However, sloth and armadillo teeth show structured wear facets, which in all other mammals are formed by tooth enamel. How is that possible? Here, I report about an analysis of fossil and recent xenarthran dental hard tissue microstructure. It shows that osteodentine is not exclusive to fossil Cingulata, but also occurs in some recent taxa. Furthermore, I… CONTINUE READING
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