In Wegener's time, scientists thought that the occurrence of fossils of the same organism in two different, disconnected continents was proof that_______ .

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Wegener proposed the theory of continental drift, which suggested that the continents were once joined together in a single landmass (which he called Pangaea) and had since moved apart. The occurrence of similar fossils in different continents suggested that the continents were once connected, and that organisms were able to move freely between them before the continents drifted apart. Wegener's theory was initially met with skepticism from the scientific community, but later became widely accepted as more evidence was discovered to support it.

In Wegener's Time, Scientists Thought That the Occurrence of Fossils