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Re: Dinofarts / Sauropod methane emissions
On Tue, May 8, 2012 at 10:48 AM, Erik Boehm <firstname.lastname@example.org> wrote:
> An analogy: Occasionally mules, hybrids of Horses and Donkeys, are fertile.
> If one were to establish a breeding population of mules (lets assume it
> happened, its not out of the realm of possibility) - would you group mules in
> the Horse clade, or the Donkey clade?
Both. Unlike taxa of the same rank, clades are allowed to overlap. For
example, see PhyloCode Note 2.1.3:
In fact, our own species is the result of several overlapping clades:
> Could you define either clade without including mules, and still have it be
Nope. A clade (=monophyletic taxon) includes an ancestor and *all*
descendants, by definition.
So, for example, eukaryotes are (probably) both within Neomura (along
with Archaea) and Rickettsiales (a subclade of Alphaprotoebacteria).
T. Michael Keesey