Nakhla 1163. Complex biomorphs appear on another Nakhla chip. This image contains three basic forms: Broad smooth knife-shaped features, elongated features with rounded endcaps and transverse compartments or dividers, and donut shaped small features, each about 1 micrometer in diameter. One possibility is the the donut-shaped features are derived from the compartments present in the elongated features. Photo Credit: David McKay 407304main jsc2009e243549

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