22409 - Well Preserved Pyritized 0.87 Inch Unidentified Lower Cretaceous Ammonites Primitive tools dense stones west of the

dense stones west of the village of Habaswein and south of Sericho

a large eccentric and recurved apical nubbin

1344 g at MNHNP (two stones of 694 and 650 g)

The Mohs scale of mineral hardness

Subfamily: Mosasaurinae Williston

22409 - Well Preserved Pyritized 0.87 Inch Unidentified Lower Cretaceous Ammonites Primitive tools dense stones west of theUnidentified species. His suture lines are wonderfully well detailed. It is naturally pyritized. It has undergone a taphonomic process of permineralization in Iron Sulfide (Pyrite). Permineralization is a process of fossilization in which mineral deposits form internal casts of organisms.