The goal of many geologists is to determine and understand the environmental conditions under which sediments were deposited. Paleontologists can use the known physiological, biological, and environmental limitations of flora and fauna found within a sedimentary unit to help elucidate the paleoenvironment in which those organisms once lived. As powerful as this tool is, however, there are limitations. In the Archean and Proterozoic, most organisms were microscopic, unmineralized, and morphologically simple prior to the radiation of metazoans. This means that, unlike the Phanerozoic, the preservation of fossils is relatively rare in the Precambrian, and hence, determining their biological affinity is...

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