You're sorting through a collection of skulls at a natural history museum, and you find one, about the size of a peach, that has no label. you notice that the unlabeled skull has partially enclosed eye orbits, with a postorbital bar but no postorbital plate. what kind of animal could the skull be?

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."