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Re: birds and/or/with dino's
David Marjanovic <firstname.lastname@example.org> wrote:
> So what? It's supported by LINE insertions, which are
> almost perfect
Yep, LINEs and SINEs are unsinkable. Just like the Titanic.
Hillis (1999) discusses some of the icebergs associated with using LINEs and
SINEs as phylogenetic markers.
Hillis, D.H. (1999) SINEs of the perfect character. Proc. Natl. Acad. Sci. USA
> ( = homoplasy-immune) characters; and the
> same paper that discovered that (Nishihara et al. 200...6?)
> also found evidence for incomplete lineage sorting between
> Pegasoferae and Artiodactyla, meaning that a couple of
> cladogeneses in that part of the tree must have happened in
> so rapid succession, generating such short internodes, that
> most analyses will run into trouble.
I would guess this is a recurring problem with placental phylogenies. Many
extant placental 'orders' probably had their beginnings not long after the K/Pg
extinctions. So these cladogenesis events tend to bunch together. A similar
thing might have happened with many neoavian bird 'orders', for the same