Re: Long-necked stegosaur, head tail mimicry?

[Nick Pharris <npharris@umich.edu>]

Quoting Mike Taylor <mike@indexdata.com>:

> Tim Williams writes:
>  > Speaking of long sauropod necks... there's a new paper in the
>  > pipeline on _Euhelopus_.  Although Wilson & Upchurch break up the
>  > clade of long-necked Chinese sauropods ("Euhelopodidae", containing
>  > _Euhelopus_, _Mamenchisaurus_, and _Omeisaurus_), they baulk at
>  > erecting (or defining) a new Euhelopodidae, which would include
>  > _Euhelopus_ and _Erketu_.
>
> I should think so!  It would be disastrous to resurrect that name to
> denote a completely different clade from the one that it has been
> universally understood to mean.

Why?  Hasn't Euhelopodidae always been universally understood to mean  
something like "_Euhelopus_ and its closest relatives, up to the level  
of morphological disparity I'm willing to accept as a single 'family'"?

--
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Nicholas J. Pharris