A stromatolite from Mauritania main content.

A stromatolite from Mauritania

Part of Hall of Planet Earth.

A Stromatolite From Mauritania AMNH/R.Mickens

Exhibition Text

An entire colony of microbes piled on one another over time, forming semi-rigid, upward-pointing, and branching columns mirrored in this 900-million-year-old stromatolite. Eventually, the structure was buried by slowly accumulating carbonate muds, visible here as the gray rock between the branches.

Gift from the Islamic Republic of Mauritania

For Educators

Topic: Earth Science

Subtopic: Earth Structure

Keywords: Geology, Stratigraphic--Precambrian, Stromatolites

Audience: General