1. 
   Archaeoceti
   (from the article `cetacean`) Cetaceans are distant descendants of a group of poorly defined mammals known as condylarths. There is debate as to whether the first cetaceans ... The first fossil whales are known from rocks approximately 50 million years old (Early Eocene Epoch). These members of the ...
   Found op http://www.britannica.com/eb/a-z/a/95
   
   
2. 
   Archaeoceti
   Archaeoceti The zeuglodonts, a suborder of aquatic Eocene mammals in the order Cetacea; the oldest known cetaceans.
   Found op http://www.wordinfo.info/words/index/info/view_unit/428/
   
   
3. 
   Archaeoceti
   Archaeocetes, or "ancient whales", are a paraphyletic group of cetaceans that gave rise to the modern cetaceans. The archaeocetes were once thought to have evolved from the mesonychids, based on dental characteristics. However, recent studies in molecular genetics and non-dental morphology show tha...
   Found op http://en.wikipedia.org/wiki/Archaeoceti
   
   

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