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RE: Proceedings of the "Quatrième sympos
> NORMAN, D.B. - On the taxonomy and diversity of Wealden iguanodontian
> dinosaurs (Ornithischia: Ornithopoda)
Norman seems not to know what 'nomen dubium' means-
"Sellacoxa pauli is considered to be a nomen dubium. The latter name should be
suppressed. The partial skeleton NHMUK R3788 may be referred to the hypodigm of
Then Sellacoxa is a junior synonym, not a nomen dubium.
"Huxleysaurus hollingtoniensis is therefore a nomen dubium and its name can
safely be suppressed. NHMUK R1148 (and a series of additional specimens that
were given different numbers, but together form an associated set of skeletal
remains collected at the same time from the same quarry – Norman, in press b)
has been referred to the hypodigm of Hypselospinus fittoni."
Then Huxleysaurus is not a nomen dubium, it's a junior synonym of Hypselospinus.
"Darwinsaurus evolutionis is a nomen dubium and this name can safely be
suppressed. The alleged holotype material can be referred Hypselospinus
fittoni and Mantellisaurus atherfieldensis."
Again, by definition, that's not a nomen dubium.
"Dollodon seelyi is therefore a nomen dubium and the name can safely be
suppressed. The material, which was regarded as the holotype of I. seelyi is
considered to be referable to the taxon Iguanodon bernissartensis."
And again. And it continues, for Dollodon bampingi and Mantellodon.
A nomen dubium is a taxon that cannot be be diagnosed nor assigned to a
diagnosable taxon. If it's a junior synonym, that's assigned to a diagnosable
taxon. It's not just a word for 'name I don't think is valid'. Get it right,