992 Organic components in enameloid of extant and fossil shark teeth

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  • Organic components in enameloid of extant and fossil shark teeth
  • Organic components in enameloid of exta

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Abstract

Structure and texture of a Pliocene shark tooth have been investigated using histochemical methods and scanning electron microscopy and compared with an extant related species. As a result it was revealed that the fossil shark tooth contained organic components comparable to those of the living species, and that collagens and non-collagen proteinaceous molecules in the fossil enameloid had a characteristic distribution pattern virtually identical to the living counterparts. This evidence suggests that fossil shark teeth contain useful information by which to investigate the evolution of developmental regimes of various vertebrate teeth.

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