The curved ridge on the inner part of the outer ear (auricle) that curves parallel to the main helix and forms a secondary spiral structure.
From Greek anti- (opposite/against) + helix (spiral), literally the 'anti-helix' or ridge opposite to the main spiral structure of the ear.
The anthelix is why forensic artists can sketch ears so specifically — it's that inner curved ridge that varies dramatically between individuals, making it nearly as unique for identification as fingerprints.
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