A fossil or petrified remains of oat or oat-like plants found in geological deposits.
From Latin 'avena' (oat) plus Greek 'lithos' (stone). This paleobotanical term combines two roots to describe fossilized oat remains.
Paleobotanists use '-lith' for fossils (like 'ammonite' or 'coprolite'), and 'avenolith' represents plants frozen in stone—these fossils tell us what ancient climates could support and how far back grain cultivation might have extended in human history.
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