One who is versed in the science of fossils.(noun)
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Use "fossilist" in a sentence
"Mary Anning (1799-1847), paleontologist and "the greatest fossilist the world ever knew""
"It is well shaded by tall ash trees, of a species, as Mr. Janes the fossilist informed me, uncommonly valuable."
"For once, though no one living is abused; but as a matter of fact one purpose of the play was, as Dr. Johnson said, “to bring into contempt Dr. Woodward, the fossilist, a man not really or justly contemptible.”"