In primitive birds the ischia are complex, usually with a small or even absent obturator process and a large, rectangular, proximodorsal process extending up toward the ilium.
The ischia, a pair of bones that formed the posterior part of the pelvis, were joined along their medial surfaces.
The left and right ischia were not fused.
Elements of the pelvis were also discovered, including two ischia and a pubis bone, along with rib fragments and an incomplete humerus and femur.
Ischia is the name of the main "comune" of the island.
In the pakicetid pelvis, the innominates are large and the ischia are longer than the ilia.
The bony skirts between the shafts of the ischia are thick and touch each other forming an almost flat surface.
