Avisauridae leg formed by fused metatarsals (the bones which comprise the foot in humans). As a result, members of this family are distinguished from other enantiornitheans exclusively by features of the tarsometatarsal and pedal phalanges (toe bones). Unlike in some prehistoric birds, avisaurid tarsometatarsals were not completely fused, with the distal (outer) parts of the metatarsals being separate from each other. The proximal (near) half of metatarsal III (the long bone in the middle of the tarsometatarsus) is convex from the front. The inside edge of this bone's trochlea (toe joint) has a bony tab which points downward, known as a
History of the horse in the Indian subcontinent "The occurrence of true horse ("Equus caballus" L.) was evidenced by the enamel pattern of the upper and lower cheek and teeth and by the size and form of incisors and phalanges (toe bones).". However, archaeologists like Meadow (1997) disagree, on the grounds that the remains of the "Equus ferus caballus" horse are difficult to distinguish from other equid species such as "Equus asinus" (donkeys) or "Equus hemionus" (onagers). An alleged clay model of a horse has been found in Mohenjo-Daro and an alleged horse figurine in Periano Ghundai in the Indus Valley. Trautmann (1982) thus remarked the supply and