Alfred Wegener used fossils to support his continental drift theory because he observed that similar fossils of plants and animals were found in different continents, which he believed were once connected together. For example, he found fossilized plant remains of the Glossopteris species, which were found in South America, Africa, India, Australia, and Antarctica. Additionally, he found identical species of land-dwelling reptiles and amphibians in South America and Africa. These fossil similarities across different continents suggested that these landmasses were once joined together and then drifted apart. These findings provided Wegener with crucial evidence to support his theory of continental drift.
