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“TREE TIME” THE SINGLE GREATEST CONTRIBUTION TO AMERICAN ARCHAEOLOGY THE STUDY OF TREE RINGS or THE DAY SOUTH WEST PREHISTORY STOOD STILL … » OLDEST KNOWN TREE DATE 180 BC

Hanging on the wall is a cross section dating from 180 BC to 500 AD

SAGUARO FOOTPRINT
Cross Dating

Published May 16, 2012 at 947 × 686 in “TREE TIME” THE SINGLE GREATEST CONTRIBUTION TO AMERICAN ARCHAEOLOGY THE STUDY OF TREE RINGS or THE DAY SOUTH WEST PREHISTORY STOOD STILL …

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