Fig. 35-6. A, Fetus at term in utero, cephalic presentation. Note the fetal vertebrae and ribs, bones of the limbs, and skull. The parietal bones have overlapped the frontal bone at the coronal suture. B, Infant during birth. Cf. fig. 31-6, lowest position (A, Courtesy of Robert A. Arens, M.D., Chicago, Illinois. B, Courtesy of Robert P. Ball, M.D., Oak Ridge, Tennessee.) Click for high resolution image.