Petrified wood is a type of fossil: it exists of fossil wood where all the organic materials have been replaced with minerals (most often a silicate, such as quartz), while retaining the original ...
In the U.S., many states have an official state fossil, or even a designated state dinosaur. Some states recognize an official dinosaur in celebration of the specific region's paleontology, and others ...
Deborah Woodcock has received funding from the American Philosophical Society, the National Science Foundation, and National Geographic. Herb Meyer has been supported in this project as an employee of ...
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