File:Biostratigraphie usgs.png
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Biostratigraphie_usgs.png (386 × 231 pixels, file size: 31 KB, MIME type: image/png)
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current | 11:05, 18 February 2007 | ![]() | 386 × 231 (31 KB) | commons>TomCatX | {{Information |Description= {{en}}The study of layered rocks and the fossils they contain is called biostratigraphy. Fossils can be used to recognize rock layers of the same or different ages. The pictures of the fossils of monocellular algae in this figu |
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