
Delphinoidea is the largest group of toothed whales with 66 genera in 6 families. The largest living member of the superfamily is the killer whale, which can reach 6 tonnes, while the smallest, Commerson`s Dolphin, is also the smallest living cetacean. ==Taxonomy== Superfamily Delphinoidea ...
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http://en.wikipedia.org/wiki/Delphinoidea

• (n. pl.) The division of Cetacea which comprises the dolphins, porpoises, and related forms.
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http://thinkexist.com/dictionary/meaning/delphinoidea/
Del`phi·noi'de·a noun plural [ New Latin ]
(Zoology) The division of Cetacea which comprises the dolphins, porpoises, and related forms.
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http://www.encyclo.co.uk/webster/D/30
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