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Bat wing hairs




http://www.nature.com/news/2011/110620/full/news.2011.376.html

Bats use tiny hairs to sense the speed and direction of air flowing over their wings. This may alert them to the danger of stalling and enable them to perform impressive aerobatic tricks, according to a report published today in the Proceedings of the National Academy of Sciences1.
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Just out curiousity, have hair like structures been noted in any pterosaur (and the like) impressions?