|  | site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | 
| A | Ejde  (Eidhi), (South of Ejde), Faroes, Faroe Islands | 273 
  map | 1928 |  | low tide zone |  |  |  | Steinböck O (1931): 10 | 
| B | Firth of Clyde (Millport), United Kingdom | 249 
  map | prior to 1882 |  |  |  |  |  | Graff Lvon (1882): 347 | 
| C | White Sea (Beloye More, Weisses Meer), Gulf of Solowetzk (Solowetsk, Solowjetsk, Solovetskiy, Ostrov, Solowetzki, Solovetski Island; Solowezki, Solovets, Solovjetsk), Russia | 1226 
  map | 1913 or earlier |  | littoral |  |  |  | Graff Lvon (1913): 77 | 
| D | Bergen and environs, Norway | 246 
  map | 1913 or earlier |  | littoral |  |  |  | Graff Lvon (1913): 77 | 
| E | The Sound (Sund, Oresund, Öresund,  Øresund), near Copenhagen (Kobenhavn, Kjobenhavn, Kopenhagen), Denmark | 2646 
  map | 1913 or earlier |  | littoral |  |  | near Kopenhagen? | Graff Lvon (1913): 77 | 
| F | Irish Sea (Port Erin) | 250 
  map | 1913 or earlier |  | littoral |  |  |  | Graff Lvon (1913): 77 | 
| G | Isle of Man | 222 
  map | 1913 or earlier |  | littoral |  |  |  | Graff Lvon (1913): 77 | 
| H | Firth of Clyde (Millport), United Kingdom | 249 
  map | 1913 or earlier |  | littoral |  |  |  | Graff Lvon (1913): 77 | 
| I | Plymouth, England (English Channel) | 255 
  map | 1913 or earlier |  | littoral |  |  |  | Graff Lvon (1913): 77 | 
| J | Nielönn, north of Kampen, Sylt Island, Germany, North Sea | 3613 
  map | Jul 1983 |  |  |  |  | "Nielönn" bei Kampen. | Hellwig M (1987): 178 | 
| K | site south of Keitum, Germany | 3615 
  map | 1982-1983 |  |  | sand |  |  | Hellwig M (1987): 178 | 
| L | Cawsand Bay, near Plymouth, England | 1337 
  map | Aug-Sep 1892 |  |  |  |  | rocks and tide-pools exposed at low water on the north side of the bay towards Picklecombe Fort... | Gamble FW (1893): 34-35 | 
| M | Drake's Island (Saint Nicholas's Island), United Kingdom | 278 
  map | Aug-Sep 1892 |  |  |  |  | Drake's Island, north-eastern face of this locality.  Among algae on the north- and south-eastern faces of Drake's Island. | Gamble FW (1893): 36, 42 | 
| N | Bergen and environs, Norway | 246 
  map | 1878 or earlier | default type |  |  |  | V. affinis er funden ved Bergen sammen med foregaaende i fjaeren paa Fuscus.  I Midten af August.  Talrige kjønsmodne Individer, der bar paa haardskallede AEg. | Jensen OS (1878): 44 | 
| O | Sylt Island, Germany | 61 
  map | 1987 or earlier |  |  |  |  | Marine Art mit zahlreichen Angaben aus dem euhalinen Milieu nordatlantischer Küsten bis zu jüngsten Funden von Populationen im Sandwatt der Nordseeinsel Sylt. | Hellwig M (1987): from Ax 2008 (citation)- p. 577 | 
| P | Oresund (Öresund, Sund, Øresund, The Sound), Denmark | 1205 
  map | 1970 or earlier |  |  |  |  | Dagegen liegen aus dem Brackwasser nur wenige Beobachtungen vor meldet Provortex affinis für Brackwasserbiotope am Öresund; | Straarup BJ (1970): from Ax 2008 (citation)- p. 577 | 
| Q | Belgium coast | 5471 
  map | 1987 or earlier |  |  |  |  | ....fanden die Art in Brackwassergebieten der belgischen Küste. | Schockaert ER, Jouk PEH, Martens PM (1989): from Ax 2008 (citation)- p. 577 | 
| R | Kiel Bay (Kieler Bucht, Kieler Bay,  Kielerbugt,  Nisler Bach), Germany | 298 
  map | 1936 or earlier |  |  |  |  | Im Ostseeraum ist Provortex affinis nur aus dem Polyhalinicum der Kieler Bucht bekannt - aus Enteromorpha, .... | Otto G (1936): from Ax 2008 (citation)- p. 577 | 
| S | off Buelk (Bülk, Bulk) Kiel Bay (Kieler Bucht;  Kielerbugt;  Nisler Bach), Germany | 2447 
  map | 1951 |  |  | fine sand, coarse sand and gravel |  | ....aus ufernahem Feinsand und Grobsand-Kies vor Bülk, 4 m Wassertiefe (unpubl. 1951) | Ax P (1951): from Ax 2008 (citation)- p. 577 |