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Morddyn: 01 Lacuna crassior
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Morddyn: 02 Lacuna crassior
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Morddyn: 03 Lacuna crassior. North Yorkshire. September 2014
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Morddyn: 04 Lacuna crassior. Shell height 3.1 mm. Menai Strait. August 2013.
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Morddyn: 05 Lacuna crassior
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Morddyn: 06 Lacuna crassior. Shell height 3.1 mm. Menai Strait. August 2013.
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Morddyn: 07 Lacuna crassior. Shell height 3.1 mm. Menai Strait. August 2013.
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Morddyn: 08 Lacuna crassior. Shell height 3.1 mm. Menai Strait. August 2013.
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Morddyn: 09 Lacuna crassior. Shell height 3.1 mm. Menai Strait. August 2013.
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Morddyn: 10 Lacuna crassior. North Yorkshire, August 2018.
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Morddyn: 11 Lacuna crassior album. COMPARISON images of L. vincta. Orkney and Menai Strait.