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
The Bones of Zora theory, which Foltz endeavors to hijack and break up. Various complications ensue; Fergus and Alicia are brought back together by their mutual passion for each other and enmity with Foltz, only to be alienated again due to Alicia's extreme behavior. Ultimately Fergus decides with regret it would be disastrous to take her back, and she leaves Krishna heartbroken, hoping to find treatment for her personality disorders on Earth. "The Bones of Zora" is unique among the later Krishna novels in its inclusion of a non-Krishnan extraterrestrial, a reptilian native of the planet Osiris. While such aliens were fairly common in