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 extinct suborder ... [2 related art...
Found on http://www.britannica.com/eb/a-z/a/95

Archaeoceti

Archaeoceti The zeuglodonts, a suborder of aquatic Eocene mammals in the order Cetacea; the oldest known cetaceans.
Found on http://www.wordinfo.info/words/index/info/view_unit/428/

Archaeoceti

Archaeoceti (`ancient whales`), or Zeuglodontes in older literature, is a paraphyletic group of primitive cetaceans that lived from the Early Eocene to the late Oligocene ({Mya|55|23}). Representing the earliest cetacean radiation, they include the initial amphibious stages in cetacean evolution and are thus the ancestors of both modern cetacean..
Found on http://en.wikipedia.org/wiki/Archaeoceti
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