Title: Early evolution of extrasolar planetary systems Phil Armitage JILA & APS University of Colorado Abstract: The surprising diversity of known extrasolar planetary systems provides circumstantial evidence for the importance of evolutionary processes - migration, gravitational scattering, and eccentricity excitation - that were weak or absent in the early history of the Solar System. I will begin by summarizing some of the open theoretical questions raised by these processes, before discussing first how the statistical properties of extrasolar planetary systems can be used to constrain posisble migration theories, and second, some of the implications of giant planet evolution for the formation and survival of terrestrial planets.