Gondwana-Laurentia paleomagnetic reconstructions and geological fits are presented, from the Neoproterozoic to the Devonian. They show the breakup of a supercontinent, the origin of the southern lapetus, an early Paleozoic South America active margin, and Laurentia trailing edge; before Taconian Laurentia - Gondwana çollision. Following it, the Acadian transpression type orogeny took place. The paleogeography supports the idea of a common origin for the Appalachian - Famatinian orogenic belts, in both Laurentia and South America.
