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Re: Heterodontosaurid with protofeathers
Well, if shifting or uncertain content = "danger", then phylogenetic
nomenclature may not be your cup of tea, anyway.
Here, however, it's worth pointing out that rank-based nomenclature is more,
not less, unstable than phylogenetic nomenclature in this respect. PN has
one source of instability: the tentative nature of scientific knowledge. RN
has two sources of instability: the tentative nature of scientific
knowledge, and _taxonomists' mood swings_.