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RE: The validity of cladograms (was Re: giant birds)
By coincidence, I just went through this exercise for the Sauropods, comparing
every sauropod cladogram I could find and paring each one down to just a few
indicator species for purposes of comparison. You can see the results under
the link to SAUROPOD NOTES in the "Sauropoda" entry. The resemblances far
outweigh the differences.
Vertebrate Notes at
[The back door address is http://www.dinodata.net/toby/notes/sauropoda.html]
On Monday, November 15, 1999 7:32 AM, Thomas R. Holtz, Jr.
> In fact, there is substantial congruence between the alternatives proposed
> by various authors in (my poster example) coelurosaurs or in (a new example)
> sauropods. Most of the major groupings are consitently found by different
> workers. The differences tend to concern a smaller fraction of "problem
> children" taxa (the various euhelopodids/mamenchisaurids among sauropods,
> troodontids among theropods, etc.) which make the trees look different from
> each other.