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Munkholmen Trondheim, Norway
latitude: 63.450001
longitude: 10.383333
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
| Plagiostomum norvegicum | Jul 19 and 22, 1954 | 30-50 m | 5 specimens total from Trondheim, Munkholmen and the harbor | |
| Trigonostomum armatum | 22 July, 1955 | 40-50 m | in sand | Westblad, coll. SMNH |