@SFOMuseum Twitter Posts Tagged dragonflies This is SFO Museum's archive of the @SFOMuseum Twitter account. There are 2 posts . See all the tags or all the Twitter posts that have been archived so far.

Shaped much like a helicopter, #dragonflies use direct flight muscles—muscles attached directly to the wings—to pull their wings up and down. However, because of how these muscles are attached, the wings cannot fold flat over their backs. #IntriguingInsects This tweet was posted on November 25, 2019.

#Dragonflies, and their more slender cousins, the damselflies, were among the first insects to evolve wings around 325 million years ago—long before dinosaurs roamed the earth. #IntriguingInsects This tweet was posted on November 25, 2019.