The degree of misfit is small. The combined continents have been given the name Pangaea. This single continent later divided into two major segments. Africa, South America, India, Antarctica, and Australia have been given the name Gondwanaland. Rock layers are similar on opposite sides of the Atlantic and Indian Oceans.
Rock layers develop under very localized conditions.
Rock layer duplication across an ocean is not likely. Hence, when rock layers are similar across an ocean this serves as evidence that the land masses on opposite sides of the ocean were once together. For example, fossils of mesosaurs are found in South America and Africa. The creature is not thought capable of swimming across such a distance. Hence the conclusion is that South American and Africa were once together.