In the tranquil setting of South West England’s sandstone cliffs, scientists have unearthed an ancient tableau: a fossilized forest that dates back an astonishing 390 million years. This Devonian Period relic reveals a world beginning to bloom with terrestrial life, a narrative of Earth’s history carved in stone and preserved against the passage of time. The forest, predominantly composed of a primeval species known as Calamophyton, represents the earliest known trees that ventured onto the dry crust of our planet.
The Calamophyton, peculiar “prototype” trees, shared no semblance with the familiar foliage of our contemporary forests. Standing no taller than 4 meters, these early trees bore hollow trunks arranged in a ring, resembling miniature trees within a tree. “This was a pretty weird forest – not like any forest you would see today,” remarked Professor Neil Davies of the University of Cambridge, who led the study. “There wasn’t any undergrowth to speak of and grass hadn’t yet appeared, but there were lots of twigs dropped by these densely-packed trees, which had a big effect on the landscape.”
These ancient trees employed an extraordinary and unsustainable method of growth. The strands making up their hollow trunks would expand, adding rings until the connective tissue was torn asunder. Dr. Chris Berry, co-author of the study, expressed fascination with their unique growth strategy, “There is no other tree that I know of in the history of the Earth that has ever done anything as complicated as this. The tree simultaneously ripped its skeleton apart and collapsed under its own weight while staying alive and growing upwards and outwards to become the dominant plant of its day.”
Trees, long known to stabilize sediment with their roots, fundamentally changed the interaction between water and land. The Calamophyton, with their dense clustering and incessant shedding of twig-like branches, had a profound effect on the Devonian landscape, even altering river flows.
The site of this discovery, once part of a continent near the equator, hosted an environment warm and dry, significantly different from today’s British coasts. Fossil remnants of the Devonian forest, ranging from tree stumps and fallen logs to root systems and soil beds, are indicators of ancient life forms and ecosystems.
Small Devonian creatures left their trace among these ancient giants, signaling the emergence of diverse life forms. “At this time, there’s nothing much bigger than lots of little arthropods knocking around on land,” Davies explains.
This groundbreaking discovery, chronicled in the Journal of the Geological Society, surpasses the age of the previously oldest known forest — the Gilboa forest in New York State — by some five million years.
Relevant articles:
– Scientists have uncovered the oldest fossilized forest, dating back 390 million years | The ancient forest was made up of the first trees to ever grow on Earth – bizarre “prototype” trees that had to rip their skeletons apart in order to grow.
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