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    • Nannostructure and significance of fish coprolites in phosphorites 

      Lamboy, M.; Rao, V.P.; Ahmed, E.; Azzouzi, N. (Elsevier, 1994)
      Phosphatic coprolites (0.5-2 cm long) occurring in Cretaceous-Eocene phosphorites of Tunisia, Morocco, Mauritania, Senegal, and Egypt were investigated for their petrology by using SEM. They exhibit a homogeneous porous ...