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Tonne Dune (Duene) east #1, Helgoland Island, Germany
latitude: 54.200001
longitude: 7.883333
Precision of location: Alexandria Digital Library (with NGA GNDB data)
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Postaphanostoma filum | Apr 1963 | 15 m | fine, medium sand |