Stromatolite from Madagascar




Stromatolite from Madagascar
About 850,000,000 years old

Stromatolites are layered mounds, columns, and sheet-like sedimentary rocks that were originally formed by the growth of layer upon layer of cyanobacteria, a single-celled photosynthesising microbe.

Dimensions: Height: 4 inches, Width: 5 inches, Depth: 2.8 inches
Weight: 531g