简介：Thecross-sectionandsurfacestructuresofwingmembranesfromthectenochasmatidpterosaurBeipiaopteruschenianuswereobservedthroughascanningelectronmicroscope(SEM).Theresultsshowthatthewingmembranecontainsahighdensityofbloodvessels,implyingstrongthermoregulatoryfunction,similartothatofabatwingmembrane.Thisisthefirstcomparisonofthemicrostructuresofpterosaurwingmembraneswiththoseofthemodernbat.Itisinferredthatabat-likephysiologyexists,atleastinrelativelysmallpterosaurssuggestingthatthesepterosaurswerewarm-blooded,activefliers.
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