Pomatoceros triqueter attachment marks 4g

Pattern of marks where the calcareous tubes of Pomatoceros were once attached to a pebble

Pomatoceros triqueter attachment marks 4g – Pattern of cement marks where Pomatoceros triqueter tubes were once attached to a pebble but have now worn off. Photographed on the beach at Chesil Cove in Dorset.

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