The ocean in the desert

So, on the way to Merzouga, we stopped at a fossil store. What, you say? Fossils in the desert, at the beginning of the Sahara? But, of course! Back in the day of the dinosaurs, this part of Morocco was underwater. I kid you not. Take a look at some of the pictures, and you will see shells and sea-like creatures fossilized in the rock... They are called Orthoceras