Word: fossilizes
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Simpson has won world-wide recognition for synthesizing recent discoveries in genetics and fossil research. He came to Harvard in 1959 from Columbia University and the American Museum of Natural History...
...also has scrutinized fossil records to see whether they confirm the discoveries of geneticists who have studied only living organisms...
Simpson also has traced the history and geography of mammals from fossil records and has contributed to the biological classification of mammals...
McNair discovered a tiny, clam-like fossil on Victoria Island, Canada, which is according to the radio-isotope method, at least 720 million years old. The oldest advanced organism before the discovery were 600 million years...
...Elliot Medal, given in recognition of published works in zoology or paleontology, was presented to Simpson for his book, "Principles of Animal Taxonomy," published in 1961 by the Columbia University Press. The book sets forth principles and procedures for categorizing the thousands of distinct organisms, both living and fossil, whose identities, similarities, and other biological relationships are important to the progress of biology. He was awarded his first Elliot Medal for "Tempo and Mode in Evolution...