This location generally corresponded to the rostro-caudal level of the genu of the arcuate sulcus.
The skull was opened above the frontal lobe unilaterally exposing the central and arcuate sulci, used as landmarks.
The cirrus-pouch is a conspicuous arcuate structure lying immediately in front of the ventral sucker.
An arcuate tooth row is poorly preserved immediately posterior to the anterior palatal vacuity.
The arcuate sulcus could be visualized transdurally during the recording chamber implantation surgery.
There is no caldera or pit crater on top of the volcano, but the higher concentration of fissures and cones at higher altitudes probably reflects an arcuate volcanic rift zone.
Articulating half-ring short, gently arcuate band.
The sculpture of the adult volution is somewhat irregularly and rather distantly spirally grooved, the grooves crossed by coarse irregular and arcuate growth wrinkles.
