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Earth's oldest known tree stood nearly 30 feet tall and looked like a modern palm, a new reconstruction shows. Workers uncovered hundreds of upright stumps of the 385 million-year-old tree more than a century ago, after a flash flood in Gilboa, New York uncovered them, but little else was known about the tree’s appearance. Then, in 2004, scientists unearthed a 400-pound fossilized top — or crown — of the same genus a few miles away. The following summer, the same team discovered fragments of a 28-foot trunk. Piecing together stump, trunk and crown now reveals what the full tree looked like for the first time. For the full article: Click Here.

The article claims the tree "looked like a modern palm". More likely a cycad, but that's just nitpicking.

Dan. I'll bet the bit that attracted you was:

'The rise of land plants such as Wattieza drastically altered the climate and paved the way for terrestrial animals and insects. “The rise of forests removed a lot of carbon dioxide from the atmosphere,” Berry explained. “This caused temperatures to drop and the planet became very similar to its present-day conditions.”'

Partially correct TNZ but I think it stands on its own as a remarkable bit of puzzle solving.

Imaging successfully piecing together fossils found several miles apart.