A lovely example which was discovered in 1989 from this world famous Silurian locality. The detail is fine throughout especially under a hand lens. A very nice addition for the collector. Approximately 425 million years old.
This lovely example is a thin slice through a branch and within are and abundance of shipworm burrows. The slice has been ground gem smooth and a high polish applied to reveal all the detail within. Approximately 15 million years old.