Chalk Group Lithostratigraphy: Northern England - Sponge Beds: Revision history

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11 October 2013

  • curprev 12:5612:56, 11 October 2013‎ Dbk talk contribs‎ 914 bytes +914‎ Created page with "Whitham (1993) identified two main concentrations of sponges in the Flamborough Chalk, the lower of which, c. 11 m thick, extending from c. 2 m above the Daneswood Upper Marl ..."
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