Mike Keesey wrote:
>What's the definition of Mirandornithes?
The least inclusive clade comprising _Phoenicopterus ruber_ and_Podiceps cristatus_ (node-based).
In: Sangster, G. (2005). A name for the flamingo--grebe clade. _Ibis_ 147(3):612-615.
(As an aside, Sangster did not include any external specifiers in this definition. However, Livezey and Zusi (2006) found no close relationship between grebes and flamingoes - meaning that [under Sangster's definition] Mirandornithes would be equivalent in content to Neoaves!)
Well, in that case it would become a junior heterodefinitional synonym of _Neoaves_. Problem solved.
But, on another note, if we understand "Mirandornithes" to *mean* "the flamingo-grebe clade", then the recognition that other groups also belong should not invalidate it. The only thing that should invalidate it would be flamingoes and grebes not having any common ancestors. And if "the flamingo-grebe clade" turns out to inlcude passeriforms, ciconiiforms, strigiforms, etc., well, so be it.
A proud member of the echidna-kookaburra clade, -- Mike Keesey