| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | Plymouth, England (English Channel) | 255 | 1953 or earlier | type locality | 10-36 m | loam | Karling TG (1953): from Artois 2008 (citation) | ||
| B | Millport, United Kingdom | 2162 | 1953 or earlier | 10-36 m | loam | Karling TG (1953): from Artois 2008 (citation) | |||
| C | Gullmarfjord, by Bay of Kristineberg, Sweden | 836 | 2008 or earlier | 20 m | mud | Kristineberg (Sweden), Gullmarfjord, Essvik | Artois T (2008): | ||
| D | Ría de El Ferrol, Galicia, Spain | 6121 | Aug 26, 2006 | mud | sublittoral near the pump of the marine biological station | Artois T (2008): |