Skull Sutures and Fetal Fontanelles (Fontanels)

sphenoid (anterolateral) fontanelle

front side of the skull between the sphenoid bone and the parietal bone

coronal suture

the suture between the parietal and frontal bones of the skull

squamous suture

Between parietal and temporal bones

sagital suture

Located on the midline of the skull lies between both parietal bones (immovable joint)

lambdoid suture

between parietal bones and occipital bone

anterior fontanelle

frontal, sagittal, and coronal/ sutures is the largest fontanelle and is placed at the junction of the sagittal suture, coronal suture, and frontal suture; it is lozenge-shaped

posterior fontanelle

is a gap between bones in the human skull, triangular in form and situated at the junction of the sagittal suture and lambdoidal suture

mastoid (posterolateral) fontanelle

one on each side of the head, just beneath the parietal bone and between the front of the occipital bone and the lower rear edge of the temporal bone