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Physeteroidea

A Dictionary of Zoology | 1999 | 302 words | Copyright

Physeteroidea (order Cetacea, suborder Odontoceti) A superfamily that comprises the families Ziphiidae (beaked and bottle-nosed whales) and Physeteridae (sperm whales), mammals capable of diving to great depths (2000 m in the case of sperm whales). The head contains a reservoir filled with spermaceti.

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MICHAEL ALLABY. "Physeteroidea." A Dictionary of Zoology. 1999. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>.

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