Fossil treetrunk

 

During the Carboniferous Period (300 million years ago) the UK was wandering northwards across the Equator. Its seas were shallow, with coral reefs. Its land was rich with tree ferns and conifers, some of which eventually compressed to form coal. But this particular tree, at Crail on the coal coast of Fife, survived uncrushed as what's perhaps the UK's most obvious fossil, and handy too for picnics. A few steps away are the footprints of a 2-metre millipede.

 

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