Characterized by or inhabited by a particular fauna or type of animal life.
From 'fauna' plus '-ated' suffix (meaning 'characterized by' or 'having'). This is a technical term used in paleontology and ecology to describe sites or periods based on their animal inhabitants.
When paleontologists describe a rock layer as 'reptile-faunated' or 'mammal-faunated', they're using this word to paint a picture of what ancient ecosystems looked like! It's like labeling which animals dominated different time periods.
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