The calcified amorphous layer of the skin of Bufo marinus (Amphibia: Anura) Academic Article uri icon


  • The integument of Bufo marinus is surveyed. It is similar to that of other anurans and contains the three chromatophores common to anurans. The skin of these toads contains more than 28% minerals deposited as small crystals in a mucopolysaccharide‐positive amorphous layer between the stratum compactum and the stratum spongiosum. These crystals reveal a high content of calcium and phosphorus aggregated in and near membrane‐bound vesicles which have an appearance very similar to matrix vesicles. Electron microscopy gives the appearance that these vesicles are associated with flbroblasts located between alternating bundles of collagen. Histochemical studies indicate that the amorphous layer possesses many of the characteristics commonly associated with mineralized cartilage or bone. Copyright © 1987, Wiley Blackwell. All rights reserved

author list (cited authors)

  • Sampson, H. W., Canon, M. S., & Davis, R. W.

citation count

  • 9

publication date

  • September 1987