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RE: 11th specimen of Archaeopteryx
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu]
> On Behalf Of Brian Hathaway
> So ... Wikipedia is a sick puppy that probably can never be
> cured, but can someone give me the latest/greatest paper,
> speech, book stating what the most recent view is of where
> Archie is? Is it still in Aves? Is it the majority view
> that it is a split-off no longer in the direct line of birds?
No definitive answers to these (except for the Aves question, which [if you use
the definition for Aves as "all descendents of the
most recent common ancestor of all living birds", then Archaeopteryx is clearly
NOT in Aves.
I just answered these questions for you on the list on Wednesday:
The "Archaeopterygidae as basal Deinonychosauria" is the most recent paper with
the most relevant taxa, but there is new data coming
in very closely related on the situation. Until we have all the significant
taxa and all the important characters together in the
same analysis, it is difficult to determine where they go.
Basically, we all have learn to deal with this ambiguity for the moment. That
is the BEST assessment right now.
> And is it felt that it does have known close-ancestors in
> the record?
Hard to assess what exactly you mean by this. Xiaotingia and Anchiornis are
older than it, and close relatives, but there is always
a GREAT problem in determining an actual ancestor (i.e., a population in direct
lineage) from a close relative.
Thomas R. Holtz, Jr.
Email: email@example.com Phone: 301-405-4084
Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Faculty Director, Science & Global Change Program, College Park Scholars
Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
University of Maryland
College Park, MD 20742 USA