The Wyoming Supreme Court decided Yellowbear v. Wyoming, finding that the Wind River Reservation had been diminished in upholding the conviction of Yellowbear (h/t Indianz).
Once again, a state court has been placed in the position of adjudicating Indian reservation boundaries in the context of of a criminal case.
Turtle Talk 
There are eight tribes whose reservation boundary lines do not lie within the boundaries of the State of Oklahoma and out of the eight three of those tribes are not suppose to be organized under the Oklahoma Indian Welfare Act, Felix Cohen is wrong about the Indian Tribes in Oklahoma this is one example Indian Tribes are going to have to do some deep research on this subject because some of the states are exercising jurisdiction they never had.