A friend recently visited the USA, and did me the marvellous favour of going to the Museum of Osteology in Oklahoma City. She did a fair job of photographing every corner for me, and we've spent many hours discussing what she saw. This really caught my eye - the most comprehensive collection of hominid skull casts I've seen. Fossil Hominids at the Museum of Osteology, Oklahoma City, OK. The skulls are positioned in height according to age - the oldest ancestors at the bottom.