‘Dinosaurs Among Us’ at American Museum of Natural History, Selected by Mark Dion

This feathered dinosaur, Anchiornis huxleyi, which lived in what’s now China about 161 million years ago, embodies the gradual transition from non-avian dinosaurs to birds. Its skeleton wasn’t built for powerful flapping, but its feathered limbs could have provided enough lift to run or jump up to high perches, and flap or glide back down again.

ZHAO CHUANG/COURTESY PEKING NATURAL SCIENCE ORGANIZATION