This is a vintage illustration of a possum skeleton. The main focus is a detailed depiction of the possum's skeletal structure, showing the bones of the head, spine, ribs, limbs, and tail. The skeleton is positioned in a standing pose, with the tail extending behind it. To the left of the full skeleton, there are separate illustrations of the possum's skull from different angles. One shows a side view, another a front view, and a third shows the lower jaw. There's also a small illustration of the teeth. The illustration is done in a detailed, scientific style, with fine lines and shading to show the bone structure. The background is a pale, off-white color, giving the image a vintage, antique feel. The overall impression is that this is a scientific illustration from a natural history book or anatomical study.