http://www.sivatherium.narod.ru/library/Dixon/main_en.htm http://en.wikipedia.org/wiki/After_Man%3A_A_Zoology_of_the_Future http://speculativeevolution.wikia.com/wiki/After_Man%3A_A_Zoology_of_the_Future Speculative Evolution Wiki http://speculativeevolution.wikia.com/wiki/Main_Page