Microraptor

Microraptor was a small, bird-like dinosaur that lived during the Early Cretaceous Period. It is notable for possessing feathers on both its arms and legs, suggesting a potential four-winged configuration. While some paleontologists believe this indicates a gliding stage in the evolution of flight, its exact phylogenetic position suggests this was an independently evolved trait.12

Microraptor is considered by some to be a dromaeosaur, a group of small to medium-sized carnivorous theropod dinosaurs known for their agility and sharp killing claws. Dromaeosaurs are considered close relatives of birds. However, there is debate as to whether Microraptor belongs to the dromaeosaur family or the troodontid family.13