| |
| | Map Turtle Group (Site not responding. Last check: 2007-11-03) |
 | | They collectively range throughout the river systems from Ohio, Indiana, Illinois, Wisconsin, Minnesota, and the Dakotas southward to southwestern Alabama and westward to eastern Texas. |
 | | Basking is an important component of the daily activity of map turtles; therefore, the quantity and quality of basking structures will significantly influence their occurrence within a habitat. |
 | | Arndt, R. G., and Potter, W. "A population of the map turtle, Graptemys geographica, in the Delaware River, Pennsylvania," Journal of Herpetology 7:375-77. |
| el.erdc.usace.army.mil /emrrp/turtles/map.html (845 words) |
|