Actually the whole site is good. Explains the male female a bit. Most common way with with pelvic bones. http://www.sirinet.net/~jgjohnso/skeletonorg.html Female ribs also curve, circular like this http://www.robertscycles.com/images/skeleton.gif Where as male's are more triangle shaped... http://www.litcompx.com/images2/p13.JPG
Hope that helps. :) BTW, sorry this is in 2 comments. I got kicked off the one computer mid comment. >_<
Actually, it's not bad for having no ref. The area between the ribs and the hips is a bit long, and the legs a bit short, but overall, not bad. Oh.. and the ribs strike me as female. Male and female skeletons can be told apart by ribs, pelvic bones and in the case of a women who's had kids, the sacrum (sp?), which is right above the tail bone. Some refs to help. http://www.sirinet.net/~jgjohnso/apskeletonsystem.jpg