The objectives of this paper are: 1) to define with precision the Mesozoic lithostratigraphic units of the Jeanne a'Arc Basinand to propose formal names for them in accordance with the recommendations of the International Subcommission on Stratigrpahic Classification and the North American Commission of Stratigraphic Nomenclature. 2) To describe the sedimentary evolution of the Jeanne d'Arc Basin in the context of the proposed stratigraphic framework, emphasizing its response to the structural framework of the basin and to regional tectonic episodes related to the breakup of Pangea. 3) To briefly discuss the petroleum potential of the Jeanne d'Arc Basin, particularly as it relates to the tectonostratigraphic history of the Grand Banks.