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>How do you >know< that the integumentary structures on Sinosauropteryx and
>the other Chinese finds are "an ideal pre-feather stage"? How would you
>recognize such a stage in the fossil record? How do you know that what you
>see in Sinosauropteryx are "pre-feathers" and aren't, e.g., modified "true"
>feathers? Why would you think that the resemblance between Longisquama
>structures and feathers is "superficial," but the resemblance between
>Sinosauropteryx dermal structures and feathers is not?
The Chinese finds, by all accounts, appear better preserved (having read
Currie et al's papers) than _Longisquama_, making comparisons better. And
was it generally accepted at the Ostrom conference that the Chinese taxa do
have very feather-like insulation?
Raymond Thaddeus C. Ancog
Mines and Geosciences Bureau