Chalk Group Lithostratigraphy: Northern England - Ulceby Oyster Bed: Revision history

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10 October 2013

  • curprev 14:3714:37, 10 October 2013‎ Dbk talk contribs‎ 550 bytes +550‎ Created page with "Comprises up to 0.2 m of distinctly soft, marly chalk with abundant pycnodonteine oysters, and brachiopods (Wood & Smith, 1978). '''Macrofossil Biozonation''': ''S. plana'' Z..."
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