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.)
Pine Hills, Union County, Illinois, USA
latitude: 37.517601     
longitude: -89.420998     
Precision of location: Gauged from chart or map 
Site Named Here: By name of site (or city, etc.) 
| Phagocata gracilis | 1966 or earlier | two springs in the Pine Hills. |