Editing Pterosaur (section)

===Pelvis===
[[File:Anhanguera-santanae sacrum.jpg|thumb|An [[anhanguerid]] pelvis seen from above, with the right side rotated towards the viewer]]
The [[pelvis]] of pterosaurs was of moderate size compared to the body as a whole. Often the three pelvic bones were fused.{{sfn|Wellnhofer|1991|p=55}} The [[Ilium (bone)|ilium]] was long and low, its front and rear blades projecting horizontally beyond the edges of the lower pelvic bones. Despite this length, the rod-like form of these processes indicates that the hindlimb muscles attached to them were limited in strength.{{sfn|Witton|2013|p=46}} The, in side view narrow, [[pubic bone]] fused with the broad [[ischium]] into an ischiopubic blade. Sometimes, the blades of both sides were also fused, closing the pelvis from below and forming the pelvic canal. The [[hip joint]] was not perforated and allowed considerable mobility to the leg.{{sfn|Witton|2013|p=35}} It was directed obliquely upwards, preventing a perfectly vertical position of the leg.{{sfn|Wellnhofer|1991|p=55}}

The front of the pubic bones articulated with a unique structure, the paired prepubic bones. Together these formed a cusp covering the rear belly, between the pelvis and the belly ribs. The vertical mobility of this element suggests a function in breathing, compensating the relative rigidity of the chest cavity.{{sfn|Witton|2013|p=35}}