site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
---|---|---|---|---|---|---|---|---|---|
A | north harbor (Nordhafen), Helgoland Island, Germany | 668 map | Jul 1964 | type locality | 32-33 m | coarse sand | museum specimen number: SMF 3331-34 | Dorjes J (1968): 365; also biogeography and ecology on this and other German Bay species in (citation)- 78-115. | |
B | north flat (Nordwatt), Helgoland Island, Germany | 726 map | Oct 1964 | shell | museum specimen number: SMF 3331-34 | Dorjes J (1968): 365; also biogeography and ecology on this and other German Bay species in (citation)- 78-115. |