| 11. | Visitors are sneaking out up to 12 tons of petrified wood each year.
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| 12. | He used native building materials of stone, fossils and petrified wood.
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| 13. | Other activities include fossicking for gemstones such as topaz, agate and petrified wood.
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| 14. | It completely immobilizes the hair, turning it into the equivalent of petrified wood.
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| 15. | The ridge is known for its abundance of amethyst, opal and petrified wood.
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| 16. | Theft of petrified wood remains a problem in the 21st century.
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| 17. | Fragments of leaves and petrified wood documented the contemporary local flora.
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| 18. | The same site preserved sections of petrified wood, some up to 50 lbs.
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| 19. | The fireplace supports the roof, and is constructed of petrified wood.
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| 20. | Some of the local Cretaceous trees were preserved as petrified wood.
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