Thumbs up for our early ancestors.
Aiello
L C
LC
Department of Anthropology, University College London, United Kingdom.
D000349:Africa; D000818:Animals; D001696:Biomechanical Phenomena; D005580:Fossils; D006225:Hand / Q000502:physiology; D049690:History, Ancient; D015186:Hominidae / Q000033:anatomy & histology* / Q000502:physiology; D006801:Humans; D008663:Metacarpus / Q000033:anatomy & histology*; D009048:Motor Skills; D013933:Thumb / Q000502:physiology