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"Neomammals" (arising out of Neoaves discussion)



David Marjanovic wrote:
"We'll probably have a complete *Toxodon* mitochondrial
genome before we'll have the first serious-sized
morphological placental analysis in history."
Is this just general speculation, or is there a project afoot to sequence Toxodon material (some of which is comparable in date to the Neandertal stuff Svante Paabo gets in the news for doing).
--
I certainly hope such a project is carried out. Since the split between the Placental superorders seems to have taken place before there was much morphological differentiation, it seems to be difficult to place primitive types: witness the suggestion that Phenacodont "condylarths" are Afrotheres despite their historic association with Perissodactyls, which are about as core Laurasiathere as you can get! ... Given the resemblance of some early South American "ungulates" to North American "condylarths," I would ***bet*** that the South American endemic "ungulate" radiation was Laurasiatherian if I was forced to, but it would be REALLY nice to get some molecular data.


While we are at it-- since "Lipotyphla" seems to be polyphyletic, some Afrotheres and some Laurasiatheres-- has anyone done molecular studies on Solenodon? Or on the remains of Nesophontids?

(Sorry-- I'm a mammal enthusiast. Dinosaur connection is thast the question arose out of discussion of a paper on the phylogeny of Neoaves.)

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Allen Hazen
Philosophy Department
Universityof Melbourne