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West flatt (Westwatt, Westwattes), Helgoland Island, Germany
latitude: 54.200001
longitude: 7.895833
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
| Bursosaphia baltalimaniaformis | Apr 1963; Jul 1964 | 3 m deep | rocky margins of the west Watt in chalky-shell-sand mix, west Watt under algae, west Watt on colorful sandstone mud in Fabricia sabella colonies | Museum specimen number: SMF 2995-3018 |
| Archaphanostoma agile | Apr, May 1963 | mud | ||
| Postaphanostoma glandulosum | Aug 1963 | gravel sediment | museum specimen number: SMF 3102-3105; rock gully (felsrinnen) | |
| Praeconvoluta karinae | Apr 1963 | 1-2 m below mean low tide line | pebbly substrate of rock scour | museum specimen number: SMF 3122-35 |
| Simplicomorpha viridis | Aug 1963; Aug 1964 | shell sediments | ||
| Pseudohaplogonaria vacua | Aug 1963 | coarse shell, gravel | museum specimen number: SMF 3200-10; cross gully (Querrinnen) | |
| Archocelis macrorhabditis | Aug 1963 | mussel shell | ||
| Paratomella unichaeta | Apr 1963 | gravel sediment | rock gully (felsrinnen) | |
| Pelochildia pachymorpha | Apr, May 1963 | gravel | museum specimen number: SMF 3315-21 |