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Re: Dinosauria: Original Definition VS Clade Conversion (WAS: Re: tiny-armed theropods)

Le 22/10/2011 11:17, Mike Taylor a écrit :
On 22 October 2011 09:57, Jocelyn Falconnet<j.falconnet@gmail.com>  wrote:
Joke apart, Owen having used *Megalosaurus*, *Iguanodon*, and *Hylaeosaurus*
to define his Dinosauria, it would have been interesting to preserve the use
of the original specifiers - the underlying issue being the validity of
these taxa. *Megalosaurus* was indeed considered by some (Molnar et al.,
1990; Allain&  Chure, 2002) as a dubious taxon until its recent resurrection
by Benson et al. (2008) - though I know that some paleontologists were not
pleased with it. And, of course, *Iguanodon* was assigned a new type species
(*I. bernissartensis*) to stabilize ornithopod taxonomy.
I read numerous papers dealing with the phylogenetic taxonomy of dinosaurs.
As far as I know, no one has ever proposed to use Owen's specifiers... Did
you ever hear of a such attempt ?
The best place for answering such questions is TaxonSearch at

It's not taken very seriously because *every* *single* phylogenetic
definition is replaced by a new one of Sereno 2005, but if you ignore
the Active Definition parts of the pages, the Definitional History
sections are very good.  In this case,
shows that Olshevsky (2000:3) suggested a definition of (Megalosaurus
+ Iguanodon).

The last draft I saw of the PhyloCode companion volume's Dinosauria
entry was using (Megalosaurus + Iguanodon + Hylaeosaurus).

-- Mike.

Great ! Thanks for the tip, Mike !