Overlapping markers can be separated by clicking on them.
Hovering the cursor over a marker will show the site's name.
Clicking on a marker will show information available about the collection site. (Compare with corresponding letter in table.)
| site | collection date | depth | substrate | salin | locality kind | comments | reference | |
|---|---|---|---|---|---|---|---|---|
| A | Helgoland Islands (Helgoland Insel, Heligoland), Germany | 1892 or earlier | default type | Helgoland, North Sea. | Apstein C (1893) ; from Faubel 1984 (citation)- p. 237 |