Michael Oard presents a global flood Ice-Age model that not only highlights how the Ice Age initiated and was sustained but also inadvertently provides a migratory route for ectothermic species within its coastal isotherms. By incorporating Oard’s calculations and what is known about the thermal requirements of extant ectothermic tortoises, a window of opportunity of approximately 87.5 years presents itself to allow intercontinental migration to the Americas. This assumes that the present elevation of the Bering Strait land bridge is not consistent with what existed in the immediate post-Flood environment but has undergone erosion. The fossil record does appear to display a terrestrial expansion if the Flood/post-Flood boundary exists at, or near, the Cretaceous/Tertiary boundary. But there are a few fossils that seem problematic to this placement, which may open the door to other interpretations in regard to the boundary’s location. The placement of the boundary, however, doesn’t negate the possibility of a terrestrial intercontinental migration of tortoises to the Americas.