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How does δ18O and δ13C fluctuate in Early Jurassic ? Investigations of belemnites from South ...

MENA FN 19 Jul 2017
(MENAFN Editorial) iCrowdNewswire - Jul 18, 2017 How does δ18O and δ13C fluctuate in Early Jurassic ? Investigations of belemnites from South Germany give the answerAb... .
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Effect of a Jurassic oceanic anoxic event on belemnite ecology and evolution

PNAS 27 Jun 2014
Here we present to our knowledge the first organic carbon isotope record derived from the organic matrix in the calcite rostra of early Toarcian belemnites ... We infer that belemnites adapted to environmental change by shifting their habitat from cold bottom waters to warm surface waters in response to expanded seafloor anoxia.
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