<<Evidence of the Meckelian groove is lacking.>>
<Of course. It's a placental (...or perhaps a cimolestan...).>
Not what I meant. And I was referring to *Articanodon* here. There is NO
preserved portion of the jaw exhibiting the groove. Thus inferences about
it's
presence or lack thereof cannot be made, including the phylogenetic utility
of
xenarthan jaws or anteater-like mandibles, which lack Meckel's fossa and
the
associated groove (more semantics in Meckelian terminology!).
<No wonder, because that is also the multituberculate jaw structure...>
Big wonder, if it looks nothing so much as an odd, if therian-like
monotreme.
<While I am at it... all characters are unordered! That's not a good idea.>
Are we to make _a priori_ assumptions about order of character state
changes
and how reversals are to be treated by the machine and thus influence
bootstraps and tree numbers? Perhaps. I like to run characters all ordered,
unordered, then variable ordering in my analyses; I will aslo run ACCTRAN
and
DELTRAN in PAUP* to test their supporting points, bootstrap and jackknife,
Adams and strict concensuesesesesuses. I keep track of the data. It helps
me
test for character change and "hard character states" without using
MacClade.
Getting that program on a Windows shell may be harder than not....
Cheers,
Jaime A. Headden
Little steps are often the hardest to take. We are too used to making
leaps in the face of adversity, that a simple skip is so hard to do. We
should all learn to walk soft, walk small, see the world around us rather
than zoom by it.
"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)
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