Scientists have used the distribution of fossils and rocks, continental shapes, and seafloor structures as evidence of past plate motions. alfred wegener, a german geophysicist, proposed the theory of continental drift based on his studies of similar fossils and rock strata across continents. wegener found a mountain range ending at south africa's coast seemed to align with the edge of a range in argentina, forming a continuous belt. this map displays similarities in fossils found on continents based on wegener's theory. which statement provides additional evidence supporting the scientific conclusion that continents were once joined, but have drifted apart over time?