21657 - Great Collection of 6 Hexanchus microdon Shark Teeth Paleocene Harpides there are only four living

there are only four living species

The group has hardly changed in millions of years

It preserves small tiny sectors with fusion crust

Dixon 1850 (ray-finned fish)

21657 - Great Collection of 6 Hexanchus microdon Shark Teeth Paleocene Harpides there are only four livingBeautiful example of this species of shark of the Hexanchidae family. They come from the Paleocene materials of the Ouled Abdoun Basin. The Ouled Abdoun Basin (or Khouribga Basin), located in the central sector of Morocco, is an enormous sedimentarian basin represented mostly by a vast filling of phosphate sediments. Apart from having a relevant raw material to be extracted, it has a series of very important paleontological sites in which amazing