mapmap| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | Skitt-Gatt (Skittgatt channel), Helgoland Island, Germany | 66map | Aug 1963 | type locality | 5 m | gravelly fine sand,shelly-sand mix | museum specimen number: SMF 3199 | Dorjes J (1968): 266-268; also biogeography and ecology on this and other German Bay species in (citation)- 78-115. | |
| B | Reede, Helgoland Island, Germany | 656map | May 1963 | 8 m | medium sand | Dorjes J (1968): 266-268; also biogeography and ecology on this and other German Bay species in (citation)- 78-115. |