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Apparently, Rubens has recently claimed that the structures on the back
of Longisquama were actually feathers. I always thought they were just
elongated scales (although so are feathers). Does anyone have any
information on this, because if they are it would mean that feathers are
plesiomorphic for Archosauria, as Longisquama isn't an archosaur. I
personally doubt that they could be homologous to theropodan feathers,
but does anyone else have any input on this, and the evidence (if any)
that they are feathers?
 
Thanks,
Patrick Mellor