Stromatolite is fossilized algae colonies, identified as some of the oldest, and longest continually
surviving forms of life on Earth. There are stromatolites that have been dated to an astonishing
3.2 billion years ago (living while the Earth may have been still under frequent bombardment by
asteroids), and there are still living colonies of the same algae today along certain shallow-water
This beautiful museum cabinet display piece is Wyoming stromatolite, aged about 400 million years,
which shows the characteristic botryoidal structure (lumpy - like a bunch of grapes, or a "brain" -like
structuring) of the outer surface of the ancient colony. Other edges show the layered structure
created by layer after
layer of algal mat growth.
The specimen is 8 inches long and 4 1/2 high and 5 inches wide. It weighs 6.8 lbs.