Science Life on Mars: Could fossil record be trapped in ancient lake mud?

A team of scientists from Brown University found that only 79 lake beds contained deposits of minerals that hint at clays on the surface.

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Goudge, T.A., Head, J.W., Mustard, J.F. and Fassett, C.I./MOLA/NASA

The mud and clays ideal for preserving fossil records are less common around Martian lakes than on Earth. A new survey of 226 ancient lakebeds on the Red Planet reveals that only a third show evidence of such deposits on the surface today.