On Fri, 28 Dec 2007, Alberto Monteiro wrote:

> Charlie Bell wrote:
>>
>>> It's wrong, because they are not "whales".
>>
>> Yes they are. They're toothed whales. Baleen whales (humpbacks,
>> blues,  rights, minkes etc) and toothed whales (including killer
>> whales, pilot  whales, belugas, narwhals, and dolphins) are a clade,
>> they're  monophyletic. They have a common ancestor that was an early
>> whale, and  they're all in Order Cetacea. "Killer whale" may be a
>> crap name, but  it's not wrong on the grounds that orcas aren't
>> whales, 'cause they are.
>>
> So the standard definition of "whales" include dolphins?
> I thought that whales didn't include dolphins, like monkeys
> don't include chimps [in Portuguese, BTW, there's a generic
> word for all non-human primates: macaco].

Dolphins are a family of the suborder Odontoceti, or toothed whales.  They 
are a kind of toothed whale.

http://en.wikipedia.org/wiki/Cetacea#Taxonomic_listing

Monkeys don't include chimps, because chimps are not monkeys, but both are 
primates.

http://en.wikipedia.org/wiki/Primate#Extant_primate_families

Charlie may be able to further clarify anything he thinks needs 
clarification.

        Julia

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