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LocNo: 1444do V
Country: Spain
Province: León, Gildar-Montó Region
Locality: Santa Marina de Valdeón
Layer: do V
Lower Boundary: UD4B--UD4C: serpentina Zone base [16,45], 366.4 million years
Upper Boundary: UD5C--UD6A1: Sphenoclym.brevispina base, 364 million years
Georeference: