(Chinese Academy of Sciences Headquarters) Researchers report exceptionally well-preserved fossil tree trunks approximately 374 million years old from Xinjiang, Northwest China. These fossils suggest that earth's earliest forest trees were able to achieve great size by a unique method that involved building a hollow cylindrical skeleton of interconnected, growing, woody strands that both tore itself apart and collapsed under its own weight in a controlled manner as the tree's diameter expanded.
from EurekAlert! - Archaeology http://ift.tt/2hZbfYq
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