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Frozen in Time.
Published online by Cambridge University Press: 20 May 2016
Mackenzie Gordon, Jr., 78 (Figure 1), was a geologist and paleontologist with the U.S. Geological Survey (USGS) for more than 40 years. Mac, as he was affectionately known, died of cardiac arrest at his home on 30 January 1992 after a very brief illness. He is survived by his wife Barbara Walker Gordon of Washington, D.C.