Nacre and false nacre (foliated aragonite) in extant monoplacophorans (=Tryblidiida: Mollusca)

  title={Nacre and false nacre (foliated aragonite) in extant monoplacophorans (=Tryblidiida: Mollusca)},
  author={A. Checa and J. Ram{\'i}rez-Rico and A. Gonz{\'a}lez-Segura and A. S{\'a}nchez-Navas},
  • A. Checa, J. Ramírez-Rico, +1 author A. Sánchez-Navas
  • Published 2008
  • Biology, Medicine
  • Naturwissenschaften
  • Extant monoplacophorans (Tryblidiida, Mollusca) have traditionally been reported as having an internal nacreous layer, thus representing the ancestral molluscan condition. The examination of this layer in three species of Neopilinidae (Rokopella euglypta, Veleropilina zografi, and Micropilina arntzi) reveals that only V. zografi secretes an internal layer of true nacre, which occupies only part of the internal shell surface. The rest of the internal surface of V. zografi and the whole internal… CONTINUE READING
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