This lovely example has both valves preserved and is a classic lower lias bivalve shell. It will make a really nice addition for the collector. Approximately 200 million years old.
This lovely shaped piece of Cotham marble or sometimes called Picture Stone, has been ground gem smooth and a professional polish applied to reveal beautiful colours and detail throughout. Approximately 215 million years old, this form of blue/green algae used to live on the bed of a sunlit, tropical sea. A unique piece.
This large piece has been ground gem smooth and a professional polish applied to reveal the algae's tree like structure in amazing detail and colours. It is a type of bio-thermal calcareous mudstone that has an algal stromatolitic component. The dendrites/tree structures are the remains of blue/green algae that grew on the floor of a warm sunlit shallow, tropical sea some 215 million years ago. A wonderful and large specimen.
A beautiful example of this uncommon brachiopod shell which is complete and has been preserved in solid calcite. It was discovered in 1971 and has remained in the same collection ever since. A really nice addition for the collector.
