I want to do a project for my class on the obstetrical conundrum. Which is basically the antagonism of selective pressures on pelvic morphology. I need help to find literature. I want to know if over the course of history, if Human baby's fontanelles increased in size in order to compensate for the narrow birth canal. Does anyone know any good articles that talk about the change in size or efficacy of the fontanelles over time? Let me know.