6.8" Mosasaur (Eremiasaurus) Jaw Section In Rock

This is a nice jaw section (yes a real one) with 4 teeth from one of the most fearsome predators to ever inhabit our oceans, the Mosasaur. It comes from the Upper Cretaceous, phosphate deposits in the Oulad Abdoun Basin of Morocco. The jaw section is 6.8 inches long. There are many different types of Mosasaurs in these deposits but this one should be Eremiasaurus heterodontus (LeBlanc, A.R.H., Caldwell, M.W. and Bardet, N. 2012).

What makes this jaw section so nice is there is no restoration or compositing and the teeth have not been remounted. There is some stabilization to the teeth but that's it and the preparation work is quite nice.

You will see hundreds of purported Mosasaurus jaws and jaw sections available at rock shops, shows and online, but nearly 100% of them are fakes. They are crudely constructed using plaster or modern animal bones with real Mosasaurus teeth mounted in them. Real Mosasaur jaws with teeth still in place are fairly rare.