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La grotte ornee Mayenne-Sciences (Thorigne-en-Charnie, Mayenne), dans le Nord de la France, est une petite caverne de 60 m de long, qui renferme 59 representations parietales, dont 27 dessins realises au pigment noir, essentiellement du charbon. Deux prelevements effectues en deux points d'une representation de cheval ont ete dates de 24 220 +/- 850 BP (GifA 100 647) et 24 900 +/- 360 BP (GifA 100...
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