Most famously, feathers allowed early birds and related dinosaurs like Microraptor to take to the air. But paleontologists have also found feathers and related structures on many other dinosaurs ...

The bones comprising them were relatively long compared to those of related dinosaurs ... —"backward-facing knee" look. Like its non-flying close relatives, Microraptor had elongated bones ...

from the fearsome giant Spinosaurus to the chicken-sized Microraptor, and were able to survive in a variety of ecosystems. One of the reasons for dinosaurs' success is that they had straight back legs ...

“It had only two toes on each foot, and that’s what told us it was a raptor dinosaur,” says ... which is exactly what it sounds like: The microraptorian might have ran while flapping its feathered ...

While the smallest dinosaurs, such as the bird-like Microraptor, weighed hundreds of grams, the bee hummingbird weighs just 2g. "Animals that become very small have to deal with specific problems ...

"We started wondering if it was a biological feature like fragments of ... at the preserved plumage of a Microraptor, a Beipiaosaurus, and a Sinornithosaurus dinosaur as well as an early bird ...