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Alvarez, L.W., Alvarez, W., Asaro, F. & Michel, H.V. Science 208, 1095–1108 (1980).
Orth, C.J., Gilmore, J.S., Quintana, L.R. & Sheehan, P.M. Geology 14, 433–436 (1986).
Wilde, P. et al. Science 233, 339–341 (1986).
McGhee, G.R. Jr, Orth, C.J., Quintana, L.R., Gilmore, J.S. & Olsen, E.J. Geology 14, 776–779 (1986).
Clark, D.L., Wang Cheng-Yuan, Orth, C.J. & Gilmore, J.S. Science 233, 984–986 (1986).
Xu Dao-Yi et al. Nature 314, 154–156 (1985).
Playford, P.E., McLaren, D.J., Orth, C.J., Gilmore, J.S. & Goodfellow, W.D. Science 226, 437–439 (1984).
Brenchley, P.J. & Newall, G. in Aspects of the Ordovician System (ed. Bruton, D.L.) Paleont. Contr. Univ. Oslo 295, 65–79 (1984).
McLaren, D.J. Geology 13, 170–172 (1985).
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Donovan, S. Iridium anomalous no longer?. Nature 326, 331–332 (1987). https://doi.org/10.1038/326331a0
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