A whale fossil from “whale valley” in Egypt not far from Cairo. Here hundreds of whales fossils lie exposed in this wind eroded valley. These whales where large-headed toothed whales that are not alive today. This is just one example of hundreds of locations where whale fossils may be found and are often very complete. However, all whales fossils are found in “young” rocks and never with sea reptiles which are also very common in the fossils record. (AFP/File/Cris Bouroncle)