Petrified Wood Bookends (Arizona) 507ab8d06fe18ca7f56c6d954b848ca3 the amount of Neanderthal at

the amount of Neanderthal at any given time was remarkably small

low and heavy heads

that the "normally gentle" beast could use

feeding upon plankton by a simple yet efficient filtering system

Petrified Wood Bookends (Arizona) 507ab8d06fe18ca7f56c6d954b848ca3 the amount of Neanderthal atFrom ancient Greek meaning "wood turned into rock", Petrified Wood is a form of fossilization where all the organic matter combines with minerals (usually a silicate, such as quartz) during a process called per mineralization. In order for wood to become petrified it must be completely covered by sediment, thereby depriving the wood of oxygen. Simultaneously, there must be a mineral rich water source close by. Over time, the water delivers the