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LocNo: 3011E2
Country: Great Britain
Province: England,Yorkshire
Locality: Bolland, Thrush Gill
Layer: E2
Lower Boundary: DER E2b--E2c(Cravenocerat.--Nuculoceras), 321 million years
Upper Boundary: Arnsbergian--Chokierian [ARN--CHO], 319 million years
Georeference: