Chalk Group Lithostratigraphy: Northern England - Deepdale Flint: Revision history

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10 October 2013

  • curprev 14:2214:22, 10 October 2013Dbk talk contribs 1,275 bytes +1,275 Created page with "A bed of flattened flints up to 80 mm thick, locally becoming semitabular, and usually overlain by a nodular flint band containing the lowest recorded specimens of the echinoi..."