| Geochemical evidence for widespread euxinia in the Later Cambrian ocean |  |
| Gill, B.C.; Lyons, T.W.; Young, S.A.; Kump, L.R.; Knoll, A.H.; Saltzman, M.R. (2011). Geochemical evidence for widespread euxinia in the Later Cambrian ocean Nature (Lond.) 469(7328): 80-83 |
| In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836, meer |
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