mapmap| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | north east wall (Nordostmauer), Helgoland Island, Germany | 608map | Aug 1963 | type locality | 5 m | fine sand | Museum specimen number: SMF 3174 | Dorjes J (1968): 244; see also biogeographic summary on this and other German Bay species in (citation)- 78-115. | |
| B | south of Reede, Helgoland Island, Germany | 669map | Oct 1964 | 8 m | fine sand | Dorjes J (1968): 244; see also biogeographic summary on this and other German Bay species in (citation)- 78-115. |