Georges Cuvier was a French naturalist and zoologist. He made the first important discoveries involving fossils, and was a main contributor to paleontology and comparative anatomy. He used his knowledge of anatomy to piece together fossils of extinct animals.

Contributions to Darwin's Theory of Evolution

Georges Cuvier (1769-1832)

He established that animals from long ago were much different from the animals today.
To Darwin, this helped to prove that species do change over time.