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In his post about the validity of phylogenetic hypotheses
based on adaptive scenarios, Tom Holtz wrote..
> Ring-tailed lemurs, however, are not so nested within known fliers,
> and its flightlessness is best regarded as primary.
Oops, bad choice of taxon: there is a minority opinion that all
primates *are* secondarily flightless!
(Sorry, couldn't resist. For those of you who don't know, the
mammalogist K.C. Beard believes that paromomyoids [basal
archontans.. though some workers regard them as dermopterans] were
volant, and are the sister-group to dermopterans, megachiropterans
and primates. In this scenario, it is most parsimonious to accept
flightlessness as a reversal for basal primates (i.e. the most
RCA of primates and their sister-group was volant]. However,
reconstruction of _Paromomys_ and related taxa as volant is
controversial and quite probably not accurate.. plus whether or not
dermopterans, megachiropterans and primates form a monophyletic
trichotomy is hotly contested. In other words, most workers would
_not_ agree that primates are flightless.. I just thought I would
point it out that it has been advocated. Sorry.]
Good to have you back Tom. Tell us about Portugal goddam it!
"No new roads.. stop nuclear testing"