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Collection date: 1985 or earlier
Comments: deep sulfide layer at depths of more than 5 cm below the sediment surface. Species found at least 3 times.
eastern shore of Sylt Island, Germany
Collection date: 1968-1970
Comments: Transition area - lower beach slope/anterior sand flat.
List, Litoralstation der Biologischen Anstalt Helgoland (12), Sylt, Germany
Collection date: 1966-1968
Kind: type locality