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RE: Maidment & Wei, 2006
> Well, since no one has replied yet, I'll give it a go.
> I think your main area of misunderstanding is that there is
> a difference between the number of diagnosable species and
> the number of actual species we have remains of.
Another example: _Ichthyornis_. A single species is generally considered valid
nowadays, due to lack of consistent differences between specimens. But the
temporal range is so large as to render this provisional at best.
Eike
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