Stone tools made of fossilised wood were found in various regions of the Sahara, The tools, some of which look like stone flints, were dated to the Acheulian period and the Neolithic periods of the North African Capsian Culture.
Some of the examples found are large petrified log sections, preserving all
the characteristics of wood such as texture and knots, while some of the
petrified wood tools and logs were of the Bifacial Willowleaf type, measuring
about 13.2 by 6.6 centimetres.
The examples from Algeria in North Africa come from the petrified
woods found near In Salah. The petrified tree samples found in the Western Desert
(the Libyan Desert) in Egypt were said to date from the Oligocene epoch, or around
35 million years ago.
Among the largest fossilised forest to be found in the
world so far are Arizona's Petrified Forest National Park in America, and the
petrified forest of Lesbos in Greece.
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