Museum of Osteology
10301 S Sunnylane Rd, Moore, OK 73160
I've been to most of the world's great natural history museums, and this rivals the best in terms of the quality of the skeletons, the masterful fidelity of the articulations, and the elegance of the exhibits. It's not a huge facility, but boasts one the most comprehensive and educational exhibits of skeletal material that I've ever seen.
Definitely worth the visit.