An additional lobe on the inner side of the protopodite of a crustacean limb.
One of the mouthparts of a spider or other arachnids, specifically the lobe of the palpal coxa lateral to the labium.
Either of the two bones that lie with one on each side of the upper jaw lateral to the premaxilla and that in higher vertebrates bear most of the teeth.
An upper jaw especially of humans and other mammals in which the bony elements are closely fused.
One of the first or second pair of mouthparts posterior to the mandibles in many arthropods that are used for tasting and manipulating food.