north flat (Nordwatt), Helgoland Island, Germany
latitude: 54.200001 54°12'0"N
longitude: 7.895833 7°53'45"E
[Precision of location: gauged from chart or map]
[Site Named Here by name of island, bay, strait, lake, river, or stream, etc., named in source publication]
Postaphanostoma atriomagnum Dörjes, 1968 | Oct 1964 | 2 m | shell |
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