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Re: Turtles and Crocodylians are not Reptiles - no? What are they?



On Thu, Jul 24, 2008 at 11:23 AM, Roberto Takata <rmtakata@gmail.com> wrote:
> On Thu, Jul 24, 2008 at 11:26 AM, T. Michael Keesey <keesey@gmail.com> wrote:
>> Wouldn't it be better to restrict Artiodactyla to the crown and just
>> say that 1) cetaceans are not artiodactyls (but are their extant
>> sister group), and 2) raoellids are very basal stem-cetaceans?
>
> Well, some use the term "Cetartiodactyla" to reffer to Cetaceans +
> Artiodactyla clade. But for some authors, Cetaceans is well within
> Artiodactyla, e.g.
>
> Boisserie et. al 2004. The position of Hippopotamidae within Cetartiodactyla
> http://www.pnas.org/content/102/5/1537.full.pdf+html

Right, but in that case I think it's better to just say that cetaceans
are artiodactyls. (And statement #2 still holds.)
-- 
T. Michael Keesey
Director of Technology
Exopolis, Inc.
2894 Rowena Avenue Ste. B
Los Angeles, California 90039
http://exopolis.com/
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