1. Matching Fossils: Wegener observed that identical fossils of ancient plants and animals were found on continents now separated by vast oceans. For example, fossils of the ancient reptile *Mesosaurus* were discovered in both South America and Africa, while the *Glossopteris* fern was found in South America, Africa, India, Antarctica, and Australia. These fossils couldn't have possibly migrated across the oceans, suggesting the continents were once connected.
2. Matching Geological Features: The coastlines of continents like South America and Africa fit together like puzzle pieces, especially along their continental shelves. Furthermore, geological formations like mountain ranges and rock types match across these seemingly disparate continents, strongly indicating they were once part of a single landmass. This suggests the continents have moved apart, creating the present-day configuration.
