Clinical note about the sutures (fontanelle Coronal suture In the fetus and newborn, Sagittal suture large membranous and un- ossified gaps (fontanelles) between the large flat bones Lambdoid suture that cover the top of the cranial cavity,allowing its passage through the birth canal and postnatal growth. Anterior fontanelle Bregma and Lambda in adulthood. Posterior fontanelle 10 10 Clinical note about the sutures (fontanelle 囟) In the fetus and newborn, large membranous and un￾ossified gaps (fontanelles) between the large flat bones that cover the top of the cranial cavity, allowing its passage through the birth canal and postnatal growth. Bregma and Lambda in adulthood