The study of fossils; a somewhat archaic term for paleontology.
From fossil + -ology (Greek -logia 'study of'). The suffix -ology creates nouns indicating academic disciplines or fields of study.
Even though 'fossilogy' is rarely used today, the pattern of -ology words shows how science builds its vocabulary—zoology, biology, geology—all follow this ancient Greek system that lets us precisely name fields of study!
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