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 | |
|---|---|---|---|---|---|---|---|---|
|  | San Pedro, California, USA | prior to 1930 | type locality | Freeman D (1930) ; from Hyman LH - p. 325 | ||||
|  | Point Firmin, San Pedro, California, USA | 1930 or earlier | default type | Freeman D (1930) abstract |