Citation: R. Posenato, Palaeobiology and taxonomy of Pachyperma laverdana OPPENHEIM, an Eocene bivalve of Mesozoic heritage, Palaontologische Zeitschrift Palaontologische Zeitschrift (Print);Journal of Palaontologische Gesellschaft Scientific contributions to palaeontology, 69(1/2), 1995, pp. 31-53