[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: New paper on Neoaves



| `--[Caprimulgiformes]

No, because...

   The names in square brackets are ones that weren't used in the
paper but which I've included so I can use them in this e-mail. In
particular, the clade I've labelled 'Anomalogonatae' is a little
different from previous usage of this name, but still corresponds to
the bulk of the Anomalogonatae minus the members that have been
shifted to the Metaves plus Cuculidae + Musophagidae, so I feel it's
still a pretty usable name for this clade.

...the fashion of naming hypotheses instead of clades has spread from the mammals to the amphibians ("The Amphibian Tree of Life", Frost and 18 more, AMN bulletin 2006) and to the birds as well. That is, the names are supposed to change any time there's any change in the contents of the taxon to which they apply. Mayr, at the very least, refuses to use Pelecaniformes and Caprimulgiformes because he has shown that their exact traditional contents don't each form a clade to the exclusion of everything else. Instead of saying "tropicbirds are not pelecaniforms", he says (paraphrasing from memory) "Pelecaniformes does not exist" or "the Pelecaniformes hypothesis has been falsified" and digs up the name Steganopodes for what a botanist would surely call "core Pelecaniformes". Caprimulgiformes contains Apodiformes -- in other words, Caprimulgiformes is paraphyletic, so its name must be destroyed, and Mayr has dug up Cypselomorphae.


I do agree that completely new concepts should come with a new name, so Reptilia should be trashed instead of being recycled for the name of a partially overlapping clade, but this can be exaggerated. It's about time for phylogenetic nomenclature.

(Leptosomidae being especially welcome).

Oh yes. Anything only known from Madagascar and Messel has got to be interesting!


Whether or not these two families form a monophyletic
Cuculiformes is not resolved,

See? Cuculiformes is the name of the hypothesis that Cuculidae and Musophagidae are sister-groups.


My question - is this inconsistent with morphological data or not?

Well, what we really need (for placentals, too!) is a morphological analysis _of this size_, with this many taxa, _plus_ of course lots and lots of fossils. Does anyone happen to know if Livezey & Zusi are progressing...?


   The Anomalogonatae divides basally into two clades whose
composition is a bit of a surprise -

Quite so. I trust the recent reinterpretation of *Messelastur* more.