Alfred Wegener cited several pieces of evidence to support his hypothesis of continental drift, including:
- The continents fit together like a puzzle.
This observation highlighted how the shapes of continents could be matched together, suggesting that they were once joined.
Wegener also referenced similar fossils found on different continents, but the response about fossils at the bottom of the ocean and on land is not part of his primary evidence. The other statements regarding oceanic crust formation and the contraction of the Earth do not align with Wegener's original arguments for continental drift.