DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Fossil-bearing rock, light micrograph. This thin slice from a flint rock includes fossils of algae and shells of gastropods (snails). The alga present here is Chara (several at bottom), a ring of twelve circles forming a hollow stem. The snails are at upper right. This sample is from Lulworth Cove, Dorset, UK.
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