1. The Ascent of Man, drawing by A. Busetto from Circa [http://www.ibc.regione.emilia-romagna.it/paleo/index.htm] www.kheper.net/evolution/ascentofman.html
2. A simplified version of this figure appears in the cover of the book El mono obeso by JE Campillo
3. From www.steinbergforcongress.com
4.
5. From Judge magazine, July 18, 1925, p. 2.
6. From the cover of The Economist Dec 24th 2005
7. by Peter Nicholson (www.nicholsoncartoons.com.au)
8.
9.
10. by Forges
11. http://www.earlelouder.com/
12.
13. by Mackay, http://www.walksf.org/segways/
14. From the cover of Trends in Ecology and Evolution, volume 22 issue 3
15. From Al margen, 2007
16. byDonado
17.
18. Circular evolution
19.
20. Homo sapiens sapiens avatariensis (from: villainbaroque.wordpress.com/2008/06/17/the-dawning-of-the-age-of-the-avatar/)
21. (from: http://faculty.knox.edu/fmcandre)
22. Evolution of woman (caricatura.ru)
23. (from: http://www.3x6.net/vhoorl/)
24.
25.
26.
27.
28.
29.
30.
31. by Dan Piraro (Bizarro.com)
http://www.uv.es/jgpausas/he.htm