Did non-avian dinosaurs have syrinxes?

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Did non-avian dinosaurs have syrinxes?

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  1. togstation Avatar

    I think that it would be very unusual for a syrinx to fossilize.

    As far as I know Scipionyx samniticus is the only specimen that might show a syrinx, but

    >Of the respiratory system little has been preserved.

    >The sole element still present consists of a seven millimetre long piece of the trachea …

    https://en.wikipedia.org/wiki/Scipionyx#Respiratory_system

    This was a theropod but apparently not very closely related to the birds.

    .

    Does anyone know of any other finds that might be helpful? –

    e.g. from the Jehol?