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Their geometry and beauty have captured the human imagination since at least Mesolithic times
Provenance: Kemmerer
Description: Araucarioxylon arizonicum cut in cross-section and polished to show the rich colors that are so famous for this location
The petrified forests of the Western United States are silicified wood in which the tree tissue has been replaced by chalcedony (cryptocrystalline quartz)
Explanation: This 220-million-year-old disk of Araucarioxylon arizonicum from Arizona is an absolute masterpiece of nature
Montierte Ammoniten Kranaosphinctes (Pachyplanulites | Madagaskar Rock Cristal Ball Their geometry and beauty haveOrigin: Madagascar Size: H44cm W42cm D16. 5cm Weight: 18. 35 kg Description: An Ammonite fossil mounted on a handmade bespoke stand highlighting the ammonite's distinctive spiral form. This is an unusually large ammonite. Additional Information: Ammonites were armoured cephalopods that died out around 66 million years ago. Fossils of them are found all over the world. All ammonites had a chambered shell which they used to regulate their buoyancy.
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