It's difficult to identify a turtle without a picture. Try finding a website that has pictures of turtles native to your area, such as http://www.enature.com/home/ and see if you can find a picutre similar to the one you found.

Good luck.
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0.1.0 ornate box turtle
1.0.0 eastern box turtle
1.0.0 Yellow belly slider
0.1.0 Red belly cooter
0.1.0 Australian shepard
1.9.0 chickens
3.2.0 children (do I still count the married ones?)
1.0.0 husband