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RE: Archaeopteryx with bird book, was Re: Archaeopteryx flight



John Hunt wrote-

This is all really cool stuff about _Archaeopteryx.  The fundamental
questions asked following its discovery still lack a definitive answer.  Is
it an avian dinosaur or a non-avian dinosaur with wings?

This has been answered well - it's semantics if you want to call Archaeopteryx a bird or not.


Do the analysis done recently code wings and feathers as characters?  As
this would have to be coded as unknown for most dinosaurs, it seems of
limited value but I am not an expert.

Yes they do. Here's a list of all the feather characters used in phylogenetic analyses so far (excluding a few recent analyses I haven't incorporated yet)-


feathers (Cracraft, 1986)
= Cracraft 1986 character 1 - feathers - absent (0); present (1).
= Hou et al. 1996 character 1 - Feather: absent (0); present (1).
= Chatterjee 1999 character 50 - feathers - absent (0); present (1).
= Sereno 1999 character 47 - Feathers (or feather-like filaments): absent (0); present (1).
= Chiappe 2001 character 168 - Feathers: absent (0), present (1).


feathered cranial crest (Zhou, 1999)
= Zhou 1999 character 2 - feathered crest on head - absent (0); present (1).

stage III feathers (Sereno, 1999)
= Sereno 1999 character 93 - Vaned feathers (rachis, barbs, barbules): absent (0); present (1).
= Rauhut 2000 character 165 - Contour feathers: absent (0) - present (1).
= Xu and Zhang 2005 character 257 - Pennaceous feathers absent (0) or present (1).


stage III contour feathers on body (Sereno, 1999)
= Sereno 1999 character 23 - Vaned feathers, distribution: primary, secondary, rectrix only (0); primary secondary, rectrix, covert, contour (1).


stage III retrices on tail (Sereno, 1999)
= Sereno 1999 character 23 - Vaned feathers, distribution: primary, secondary, rectrix only (0); primary secondary, rectrix, covert, contour (1).


paired elongate retrices (Zhou, 1999)
= Zhou 1999 character 3 - long tail feather - absent (0); present (1).

stage III covert feathers on wing (Sereno, 1999)
= Sereno 1999 character 23 - Vaned feathers, distribution: primary, secondary, rectrix only (0); primary secondary, rectrix, covert, contour (1).


stage III secondary feathers on ulna (Sereno, 1999)
= Sereno 1999 character 23 - Vaned feathers, distribution: primary, secondary, rectrix only (0); primary secondary, rectrix, covert, contour (1).


stage III primary feathers on manus (Sereno, 1999)
= Sereno 1999 character 23 - Vaned feathers, distribution: primary, secondary, rectrix only (0); primary secondary, rectrix, covert, contour (1).


asymmetrical remiges (Zhou, 1999)
= Zhou 1999 character 1 - flight feather with asymmetric vane - absent (0); present (1).
= Norell et al. 2001 character 1 - Vaned feathers on forelimb symmetric (0) or asymmetric (1).


alula (Sereno, 1999)
= Sereno 1999 character 98 - Alular feathers: absent (0); present (1).
= Chiappe 2001 character 169 - Alula: absent (0), present (1).

metatarsal "remiges" (Xu and Zhang, 2005)
= Xu and Zhang 2005 character 256 - Metatarsalian feathers absent (0) or present (1).


Mickey Mortimer