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MASS OF ANNELID BURROWS - DEVONIAN, PENNSYLVANIA.
Huge slab of fine grained sandstone. The upper surface is crowded with 3D feeding burrows made by worms. The burrows are in every direction with many crossing under each other. A very impressive display slab of the highest quality. Evidence of bioturbation at it's very best.
Upper Devonian.
Between eat Smithfield & Ayres Corners, Bradford County, Pennsylvania, U.S.A.
Slab : 24 x 22 x 2.3cm.
Our Price: £50.00
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