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RE: Proceedings of the "Quatrième sympos



> 385-404
> 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 
Barilium dawsoni."

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, 
people.

Mickey Mortimer