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RE: Turtles and Crocodylians are not Reptiles - no? What are they?
Quoting Tim Williams <email@example.com>:
Closer to hippos thant to mesonychids anyway.
Actually, no. Under Thewissen &c's phylogeny, there is a 3-way
polytomy (trichotomy) composed of Mesonychia, _Andrewsarchus_ and
the Cetacea+Artiodactyla clade. The hippopotamids are inside the
crown Artiodactyla, in the Suina clade. Because the whales are
recovered in a Cetacea-Raoellidae clade at the base of the
Artiodactyla, cetaceans are *not* closer to hippos than to
mesonychians. Not according to this phylogeny, anyway.
Yes they are. The existence of a "Cetacea+Artiodactyla clade" that
excludes Mesonychia means that cetaceans are closer to hippos (as
artiodactyls) than they are to mesonychians. It's just that, under
Thewissen et al.'s phylogeny, cetaceans are not any closer to hippos
than they are to llamas, babirusas, chevrotains, mule deer, okapis,