Pozas Azules II, a desert spring near Cuatro Ciénegas, Coahuila, Mexico. Large stromatolites can be seen under the water near the shoreline.

Preview Size| Publication Size

An underwater view of a stromatolite in Pozas Azules II, a desert spring near Cuatro Ciénegas, Coahuila, Mexico. The 60 ml syringe is being used to take a sample for study.

Preview Size| Publication Size

Laguna Intermedia, in the Churince system of springs near Cuatro Ciénegas, Coahuila, Mexico. This spring has extensive microbial mats along the shoreline.

Preview Size| Publication Size

Microbial mats in Laguna Intermedia, Cuatro Ciénegas, Coahuila, Mexico. Small bottles being used for incubatios of small pieces of mat can be seen in the photograph.

Preview Size| Publication Size

An evaporitic soil containing laminated microbial communities (see below) in the Churince system, Cuatro Ciénegas, Coahuila, Mexico.

Preview Size| Publication Size

Laminated microbial communities underneath an evapoitic soil (see above) in the Churince system, Cuatro Ciénegas, Coahuila, Mexico.

Preview Size| Publication Size

Laguna Grande, a spring-fed lake near Cuatro Ciénegas, Coahuila, Mexico. Laminated microbial mats are found along the shoreline of this lake (see below).

Preview Size| Publication Size

A laminated microbial community on the shoreline of Laguna Grande, a spring-fed lake near Cuatro Ciénegas, Coahuila, Mexico (see above).

Preview Size| Publication Size

Tufts of cyanobacteria on the shoreline of Laguna Grande, a spring-fed lake near Cuatro Ciénegas, Coahuila, Mexico (see above).

Preview Size| Publication Size