Ardipithecus ramidus

http://www.sciencebuzz.org/blog/ardipithecus-ramidus-and-our-hominid-past

http://www.peoplesworld.org/the-importance-of-being-ardi-an-emerging-picture-of-human-origins/

http://www.macroevolution.net/ardipithecus-ramidus.html

http://news.nationalgeographic.com/news/2009/10/photogalleries/oldest-human-skeleton-ardi-missing-link-chimps-pictures/

http://www.ecotao.com/holism/hu_austral.htm

http://connect.in.com/ardipithecus-ramidus/photos-ethiopien-kort-f90c2108942b3fec.html

http://natgeo.fi/44-miljoonaa-vuotta-sitten-kahdelle-jalalle

http://www.physicsforums.com/showthread.php?p=2379656

http://prehistoria.foroactivo.net/t559-ardipithecus-ramidus-faq

http://www.astronoo.com/articles/ardipithecus-en.html

http://www.ablueview.com/2009/10/ardipithecus-ramidus-cartoon.html

http://www.sciencemag.org/content/326/5949/64

http://www.examiner.com/science-nature-in-national/ten-facts-about-ardipithecus-ramidus-ardi