Potential Syrinx Timeline (IMAGE)

University of Texas at Austin

Potential Syrinx Timeline

Caption

Two primary hypotheses for the evolutionary transition from a laryngeal sound source to a syringeal sound source (blue shaded box). Auditory innovations are shown as black dashes and suggest a sustained role for acoustic communication in archosaurs. Understanding whether the shift to a syringeal sound source occurred early or late in bird-lineage archosaurs will require further comparative genomic and paleontological work.

Credit

Julia Clarke et al.

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