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Festival of Geology 2020

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BRANCH OF A TROPICAL TREE (Calamites) - 300 million years old - South Wales

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PART OF THE BRANCH OF A TROPICAL TREE

Preserved as a sandstone cast

Calamites
 
300 million years old
(Carboniferous period)
 
Nant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales

Calamites was a giant tree closely related to living horsetails. They grew to a height of up to 18 metres. They lived during the Carboniferous period and were a large part of the tropical Coal Measures forests.

They had tapered, jointed trunks which were hollow in life and frequently became filled with sediment on burial to produce natural fossilised casts.
 

THE COAL MEASURES FORESTS

In the Carboniferous period Britain was situated near the equator and covered by dense tropical rain forest with giant trees and strange fern-like plants. Much of this vegetation became layers of coal, but some plants left impressions in mud which hardened into stone. 

Flowering plants had not yet evolved and the dominant vegetation was giant clubmosses, horsetails and seed ferns growing on the banks of the coal-forming swamps. Animal life at the time was dominated by insects which included dragonflies with a two-metre wingspan. 

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​​​​​​​Click on a picture for a larger image


Size: 7 x 7 x 7 centimetres
Weight: 567 grams

PRICE: £22.00
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BRANCH OF A TROPICAL TREE (Calamites) - 300 million years old  -  South Wales
BRANCH OF A TROPICAL TREE (Calamites) - 300 million years old  -  South Wales BRANCH OF A TROPICAL TREE (Calamites) - 300 million years old  -  South Wales BRANCH OF A TROPICAL TREE (Calamites) - 300 million years old  -  South Wales BRANCH OF A TROPICAL TREE (Calamites) - 300 million years old  -  South Wales