Now, an international team has discovered an entire ecosystem preserved in sedimentary stone from the Early Pennsylvanian (a period from around 320 to 318 million years ago), containing more than ...

For example, marble is created when limestone is pressure-cooked within the earth, causing the minerals that compose the stone to re-form into new crystals. Sedimentary rock is formed by the ...

Results from this initial study published in 2000 revealed a long sedimentary sequence, containing stone tools in an area of present-day rainforest. This site is one of the few in Africa to feature a ...

Results from this initial study published in 2000 revealed a long sedimentary sequence, containing stone tools in an area of present-day rainforest. This site is one of the few in Africa to ...

Results from this initial study published in 2000 revealed a long sedimentary sequence, containing stone tools in an area of present-day rainforest. This site is one of the few in Africa to ...