The homology and phylogeny of chondrichthyan tooth enameloid.

  title={The homology and phylogeny of chondrichthyan tooth enameloid.},
  author={Jesse A. Gillis and Philip Conrad James Donoghue},
  journal={Journal of morphology},
  volume={268 1},
A systematic SEM survey of tooth microstructure in (primarily) fossil taxa spanning chondrichthyan phylogeny demonstrates the presence of a superficial cap of single crystallite enameloid (SCE) on the teeth of several basal elasmobranchs, as well as on the tooth plates of Helodus (a basal holocephalan). This suggests that the epithelial-mesenchymal interactions required for the development of enameloid during odontogenesis are plesiomorphic in chondrichthyans, and most likely in toothed… CONTINUE READING
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