1. 
   zoogenesis
   <cell biology> The origin of animal life on the planet. The origin and evolution of a particular animal species. ... (11 May 1997) ...
   Found op http://www.mondofacto.com/facts/dictionary?zoogenesis
   
   
2. 
   zoogenesis
   zoogenesis 1. The doctrine of animal production or generation. 2. The origin of animals or animal life on earth. 3. The origin and development of a particular animal species.
   Found op http://www.wordinfo.info/words/index/info/view_unit/2733/13
   
   

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