Armored Lizard Skull (Peltosaurus sp.) | South Dakota glass It commonly forms in well-defined

It commonly forms in well-defined hexagonal crystals and can be found both as individual points and clustered formations

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iron and copper in the water and sediment during the petrification process give petrified wood a variety of color ranges

Smoky Quartz is a striking variety of Quartz mineral known for its translucent brown to nearly black coloration

Armored Lizard Skull (Peltosaurus sp.) | South Dakota glass It commonly forms in well-definedPeltosaurus sp. Oligocene Brule Formation Pennington County, South Dakota Specimen approx. dimensions: 3" x 1. 5" x 1" Matrix approx. dimensions: 5. 25" x 4. 5" x 4. 5" The preservation on this piece is fantastic. Its armor is well pronounced. The mouth, including teeth, eye sockets, and nostrils are all clearly visible. There is some minor restoration. Peltosaurus is an extinct genus of anguid lizard from North America that lived from the Eocene to