An undated handout picture shows two molar teeth belonging to a Neanderthal from around 63,400 years ago. The teeth, found in Pinilla del Valle in the Madrid region, have grooves formed by the passage of a pointed object, which confirms the use of a small stick for cleaning the mouth, Paleontology Professor Juan Luis Asuarga told reporters, according to Spanish newspaper El Pais. REUTERS/Madrid regional government/Handout
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