20256 - Extremely Beautiful 4.77 Inch Brazilian Agate Slice (Chalcedony Geode Section) Tylosaurus sp Picture: Geological contextualization of North

Picture: Geological contextualization of North Africa outcrops:  "First report on Cretaceous vertebrates from the Algerian Kem Kem beds

Dyrosaurus minor

Parent taxon: Aulacopleuridae according to P

-Prognathodon anceps (Leiodon anceps)

Denckmannites

20256 - Extremely Beautiful 4.77 Inch Brazilian Agate Slice (Chalcedony Geode Section) Tylosaurus sp Picture: Geological contextualization of NorthAgate is a rock consisting primarily of cryptocrystalline silica, chiefly chalcedony, alternating with microgranular quartz. It is characterized by its fineness of grain and variety of color. Although agates may be found in various kinds of host rock, they are classically associated with volcanic rocks and can be common in certain metamorphic rocks. This beautiful large polished agate slices comes from southern Brazil. The stone has been soaked in a