Thumbs, tools, and early humans.
Hamrick
M W
MW
Inouye
S E
SE
D000328:Adult; D000818:Animals; D001696:Biomechanical Phenomena; D005580:Fossils; D006071:Gorilla gorilla / Q000033:anatomy & histology*; D049690:History, Ancient; D015186:Hominidae / Q000033:anatomy & histology*; D006801:Humans; D009048:Motor Skills; D002679:Pan troglodytes / Q000033:anatomy & histology; D013933:Thumb / Q000033:anatomy & histology*