Complex sentence: Both offer exposures of a mid-Purbeck Lagerstätte, rock laid down in a mid-Cretaceous lake, in which fossilized insects, fish, and crocodilians have been found.
Split into simpler sentences: Both offer exposures of a mid-Purbeck Lagerstätte, rock laid down in a mid-Cretaceous lake. Fossilized insects, fish, and crocodilians have been found.