No. In such cases
Pangalloanserae indeed self-destructs, it is inapplicable under this
phylogenetic hypothesis. Fully allowed by the current draft of the PhyloCode,
and unlikely to be forbidden.
IMHO a good thing sometimes
-- I'd rather have that, say, Articulata (annelids + panarthropods, not the
brachiopods with elaborate shells) self-destructs than it becomes synonymous to
Protostomia.
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