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Kan maneter bli fossil??? Ja, det kan de faktiskt!! Nedan ett fossil av en manet från karbontiden. FossilFriday When we think of fossils we think of bones, shells, or maybe teeth, as it is incredibly hard to preserve tissues from decomposition and, of course Think how many jellyfishes are there in the ocean, yet very few of them are preserved in the fossil record. The yellow bar on the right measures 1 cm. Would you be able to recognize a fossil like this?

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Seriation, Stratigraphy, and Index Fossils

Sprint events in cross-country skiing are unique not only with respect to their length 0. Our aim was to systematically review the scientific literature to identify factors related to the performance of elite sprint cross-country skiers. Four electronic databases were searched using relevant medical subject headings and keywords, as were reference lists, relevant journals, and key authors in the field. Only original research articles addressing physiology, biomechanics, anthropometry, or neuromuscular characteristics and elite sprint cross-country skiers and performance outcomes were included.

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