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 the Scottish Mountaineering Club ("SMC") as one of 34 Furths, which is a mountain above in elevation, and meets the other SMC criteria for a Munro (e.g. "sufficient separation"), but which is outside of (or "furth") Scotland; which is why The Bones is sometimes referred to as one of the 13 Irish Munros. The Bones' prominence qualifies it to meet the Arderin classification, and the British Isles Simm and Hewitt classifications. The Bones is not in the MountainViews Online Database, "100 Highest Irish Mountains", as the prominence threshold is over . The Bones The Bones (), at high, is the