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Pholadid burrow

Pholadid burrow

SKU: TRF 21.0
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£5.00
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Cast of hemispherical lower end of bivalve boring. With 10 ridges of scratch marks to L. & R. made as burrow was bored. Broken upper surface shows valves of bivalve inheart-shaped X-section with matrix. Cromer Forest Bed Norfolk.

Size: 40mm dia