“These are the oldest fossils of sulfur-oxidizing bacteria to have ever been reported.” The fossils were preserved in thick sections of black chert—an opaque, silica-rich rock—which was located in the ...

The 2.52 billion-year-old sulfur-oxidizing bacteria are exceptionally ... microfossils preserved in a layer of hard silica-rich rock called chert located within the Kaapvaal craton of South ...

During the night, white sulfur-oxidizing bacteria swarm over the purple ... Dolomite: Sedimentary rock composed of calcium magnesium carbonate. Eukarya: Domain of both micro- and macro-organisms ...

NASA’s Curiosity rover has uncovered intriguing traces of sulfur crystals embedded in Martian rock formations, adding weight to the theory that ancient Mars may have supported microbial life.

Sellam found long, twisting, microscopic filaments of a type previously identified as being microbial fossils belonging to sulfur-oxidizing bacteria.

to determine the composition of the rock.” While this is the first time scientists have found pure sulfur on the planet, they have also discovered several different kinds of sulfur on Mars.