20734 Great Collection of 4 Spinosaurus Dinosaur Teeth Cretaceous KemKem Beds Otodus in matrix Its beautiful orange color is Its beautiful orange color is the result of the oxidation of the initial sulfides such as pyrite pterygoid with short palatine process at about 45° relative to the ectopterygoid process most of the last published studies refer to other nomenclature in the description of the units and formations of the Lower and Upper Cretaceous The different Geological Formations that make up the orography of the Cretaceous in the South East of Morocco have been mostly treated in an undifferentiated and not too accurate way by collectors