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Re: coelurosaurs and phylogeny type stuff
Nick Longrich wrote-
Great advice Nick. These characters we work with have a lot of variation
and often have distributions we don't realize. People (me included) base
too much off of others' data matrices.
> I wanted to club myself over the head after I got a good look at an
> uncrushed caenagnathid femur and realized that while I was correctly
> grouping the femoral heads according to their morphologies, I was
> *completely* wrong on the homologies (disregard anything I've said
> about femoral homologies in the past year...).
Good thing I didn't get to redefining my trochanteric characters or codings.
So, you now agree that most maniraptoriformes (ornithomimids, oviraptorids,
etc.) have unfused anterior and greater trochantors?
> to me this is circular, since how do I know what's homoplastic until
> I've thrown everything into the mix and run the matrix? Maybe what I
> think is signal is actually homoplasy and vice versa? Is real
> phylogenetic signal like pornography- you know it when you see it? Or
> like pornography in the sense that it's difficult to see because it's
> often scrambled?
> Anyways, keep at it. Mickey's done some pretty impressive
> stuff, better than some of the published things I've seen. I think he
> may be onto something with Bagaraatan, maybe it's a very derived
> theropod which has done something really weird to its tail.
Thanks a lot!