were likely used in self-defence. Falcarius is known from many specimens, including complete forelimb specimens. Most of the bones of the pectoral girdle and forelimb are known, although sternal bones are not preserved. Both a left and right scapula are preserved, and they are both mostly complete as well. The blades of the scapulae are about long, and also quite slender, with barely any expansion. They are curved instead of straight. The scapula is placed in a relatively high position. Two coracoids are also preserved, although they differ more than the scapulae in morphology. The right coracoid is the better preserved of the two. The coracoid is not specially enlarged. The furcula is elongated and narrow, its branches placed at an angle of 104°. It is V-shaped and possesses a small hypocleidium at the front. The arm as a whole is not especially developed in length but shows signs of an increasing robustness. The humerus has a rather short triangular deltopectoral crest. The epicondyles are exceptionally thick, indicating a strong musculature. The ulna is lightly curved. The hand is rather long but not very robust, with in general an elongated metacarpus, although the first metacarpal is short. The first finger diverges from the second finger, the longest of the hand. The third finger is very thin. The hand claws are moderately curved, rather pointed, and moderately long. The vertebrae of the back have below their front extensions, the prezygapophyses, a groove which is divided in three smaller depressions. On the thumb claw the raised attachment point for the tendon of the extensor muscle is bordered by deep grooves for ligaments. The middle vertebrae of the back have a second ridge extending from the base of the upper rib joint, the diapophysis, to the back of the vertebra. In the arm, the shaft of the humerus is reinforced by powerful, somewhat obliquely placed, thickenings extending towards the condyles of the lower joint, which swellings have a hollow front edge. The front edge of the hip joint has a prominent swelling, pointing sideways to the back, on the pubis. In the pelvis the ilium was by a moderate inclination partly adapted to a more raised position of the trunk. The pelvis was propubic or mesopubic: the pubic bone pointed more or less forwards. The leg was relatively long and adapted to running, with the lower leg longer than the thighbone. In the