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RE: Did dinosaur wings evolve for breeding display?/Longisquama
Dave Peters wrote:
It is not clear that this is authentic association, however, since while
apparently some frilliness is in ONE taxon that ONE individual associated with
*Longisquama*, the material in *L.* is so far unique to itself in nature. That
the integumentary structures (if they are indeed integumentary in origin) have
a super and substructure that is unique, positing similarities due to an
inferred relationship is unsound. It would help if we found an unfaked skeleton
with associated structures and in a better state of preservation, and/or some
method to determine the method of implantation of these structures in the body.
New assessment of the structures, and a unique, fresher perspective? Or the
fact that Reisz and Sues were speculative, but Voight et al. were more concrete
and used new machines to assist their analysis?
These "fronds", if they are integumentary in origin, have nothing to do with
wings in *Longisquama*. As such, they are (or should) not have any bearing on
the origin of pterosaur wing structure. More consistently, you see lizards
using their spines and skulls for breeding displays, and ribs for aerial
maneuverability, and ne'er do the twain meet it seems.
Jaime A. Headden
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