Close-Ups Of Stromatolites

Late Precambrian (Ediacaran Period) Deep Spring Formation

Esmeralda County, Nevada

Late Precambrian (Ediacaran Period) stromatolites from the late Precambrian portion of the Deep Spring Formation, Esmeralda County, Nevada; the specimens are roughly 550 million years old, created by a species of cyanobacteria. Photograph courtesy Russell B. Shapiro.

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