The hind wings of "Anchiornis" were also shorter than those of "Microraptor", and were made up of 12–13 flight feathers anchored to the tibia (lower leg) and 10–11 to the metatarsus (upper foot). Also unlike "Microraptor", the hind wing feathers were longest closer to the body, with the foot feathers being short and directed downward, almost perpendicular to the foot bones. Unlike any other known Mesozoic dinosaur, the feet of "Anchiornis" (except for the claws) were completely covered in feathers (much shorter than the ones making up the hind wing).