obturator process

The obturator process is an anatomical feature on the pelvis of archosaurs.

It is a raised area of the ischium bone of the pelvis.{{cite book|last1=Romer|first1=Alfred S. |year=1923|chapter=The Pelvic Musculature of Saurischian Dinosaurs|title=Bulletin of the American Museum of Natural History|volume=48|pages=605-617}} It is the origin of muscles that attach to the femur and aid in running. These muscles are called M. pubo-ischio-femoralis externus 1 and 2 in crocodylians. In birds the muscles are called the M. obturatorius lateralis and M. obturatorius medialis. They insert on the greater trochanter of the femur.{{cite journal|last1=Hutchinson|first1=John R.|year=2001|title=The evolution of femoral osteology and soft tissues on the line to extant birds (Neornithes)|journal=Zoological Journal of the Linnean Society|volume=131|pages=169-197}} See proximodorsal process