Adria in Mediterranean Paleogeography, the Origin of the Ionian Sea, and Permo-Triassic Configurations of Pangea

James E T Channell, Univ. Florida, Geological Sciences, Gainesville, United States, Giovanni Muttoni, University of Milan, Department of Earth Sciences 'Ardito Desio', Milan, Italy and Dennis V Kent, Rutgers University New Brunswick, EPS, New Brunswick, NJ, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, United States