Corrections and Clarifications
In the photos accompanying the Research News article about the 1993 annual meeting of the American Association of Physical Anthropologists by Elizabeth Culotta ("At each others' throats," 14 May, p. 893), the three hyoid bones were not depicted in identical orientations. The hyoid of a pig, shown at the bottom, should have been rotated so that the arms of the bone point upward in order to match the orientation of the modem human and Neanderthal hyoid bones shown in the upper and middle photos.