Siamang, [571]

Sibbald's Rorqual, [2], [356]

Sigmodon, [479]

Simia satyrus, [580], [581];

skeleton of, [582];

skull of, [583];

nest of, [583]

Simiidae, [570]

Simocyon, [423]

Simplicidentata, [462] f.