Evolution and evidence

Fossilized remains of early cetaceans (ancient whale ancestors), Pakicetus and Basilosaurus, were discovered in a rock formation in Pakistan.

Figure 1: Stratigraphy profile of rock layers containing cetacean fossils

Describe the evidence that paleontologists could use to show that Pakicetus inhabited the Earth earlier than Basilosaurus.

[2]

Fossilized remains of early cetaceans (ancient whale ancestors), Pakicetus and Basilosaurus, were discovered in a rock formation in Pakistan.

Figure 1: Stratigraphy profile of rock layers containing cetacean fossils

Describe the evidence that paleontologists could use to show that Pakicetus inhabited the Earth earlier than Basilosaurus.

[2]

Evolution and evidence Questions