06587 - Top Huge 1.78 Inch Mosasaur (Prognathodon anceps) Tooth in Matrix Late Cretaceous Otarion Alethopteris valida

Alethopteris valida

You can see the whole bone structure as well as details of the jaw and its small teeth

Not restored or glued

the fossil record of these enormous vertebrates is very well represented

Chalcedonization is a variety of silicification

06587 - Top Huge 1.78 Inch Mosasaur (Prognathodon anceps) Tooth in Matrix Late Cretaceous Otarion Alethopteris validaImpressive Prognathodon tooth in its natural matrix. Huge size. Unbroken specimen. In the international market is very common to find Mosasaurus rests coming from the phosphate quarries of the Upper Cretaceous of the Ouled Abdoun Basin (Morocco). This quarries have been exploited since the beginning of the past century. Many sellers that sell this fossils do not make a good precise taxonomic identification work. In these sites there are numerous