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The Oldest Stuff on (and Off) Earth!

By Becky Ferreira Aug 5, 2013

2 of 17

Stromatolites

Fossils are by definition ancient, so it's no surprise that the oldest of them all stromatolites are pretty Earth-shatteringly geriatric. Dating as far back as 3.5 billion years, these sedimentary records of early microbial life are among our only portals into the primordial landscape of early Earth.

Tags: science, school, slideshows, space, nasa, earth, oldest

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