The U.S. Mint's bicentennial commemorative quarter for South Dakota features a ring-necked pheasant (state bird) and Mount Rushmore (the state nickname is "Mount Rushmore State"). South Dakota became the 40th state in 1889. Public domain image on Wikipedia.
Official State Nickname of South Dakota
The official nickname of South Dakota is "Mount Rushmore State" (designated in 1992). The nickname appears on South Dakota's state flag. Mount Rushmore itself is featured on the U.S. Mint's bicentennial commemorative quarter for South Dakota. All State Nicknames
Earlier Nicknames
Previous nicknames for South Dakota are the "Coyote State" (coyote is the official state animal) or the "Sunshine State," alluded to in the pledge to South Dakota''s state flag ("I pledge loyalty and support to the flag and state of South Dakota, land of sunshine, land of infinite variety.").