The venous sinuses of the dura mater of the posterior cranial fossa in human fetuses.
D003388:Cranial Fossa, Posterior; D003392:Cranial Sinuses / Q000033:anatomy & histology / Q000196:embryology*; D005260:Female; D005333:Fetus / Q000033:anatomy & histology*; D005865:Gestational Age; D006801:Humans; D008297:Male; D011247:Pregnancy