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Cladistics can be fun (joke)
After I finished my bird matrix (40 ingroup taxa, an allzero outgroup, 51
characters), I accidentally started the calculation before I found out how
to make some multistate characters ordered but keep others unordered. This
guarantees that the outcome is nonsense, because some of my characters
must obviously be ordered (e. g. the number of sacral vertebrae).
I got 120629 most parsimonious trees (well, after 1.3 billion
branch-swapping replications I stopped it). I checked out 26 of these and
was surprised. They are pretty funny, for example *Lectavis* is always a
euornithine and *Yungavolucris* is always the sistergroup of *Sinornis*,
and pretty interesting, for example *Iberomesornis* and *Noguerornis* are
sistergroups in 99 % of the trees even though I didn't include the one
character that optimizes as a synapomorphy for them in the analyses by
Chiappe et al., and *Liaoningornis* is always a euornithine. Resolution of
Enantiornithes is surprisingly good, for example Avisauridae the way I
mentioned it earlier today comes out in 53 % of all trees:
. Don't ask me how *E.* got in there.
If anyone is interested in these 26 (or fewer), as well as the
strict consensus bush and the 50 % and/or 60 % majority-rule consensus
trees, I can send them as .tre files. :-) If you don't have PAUP*,
TreeView or suchlike, you can open them as text files and will see the
tree written as (A((B,C)(D(E,F)))).
You'll notice that I didn't add a character to take the
plesiomorphic long tail of *Yandangornis* into account. :-}
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