1.   The skull bones fuse between the ages of fifteen and twenty-five.

2.   Because the sound carries through the skull bone, the patient has some hearing in the other ear as well.

3.   A transducer acts like a tiny speaker, transmitting sound waves by vibrating the skull bone, which relays these vibrations to auditory nerves.

4.   The fungus was back, growing into her skull bone.

5.   The operation involves removing the skull bones, paring them down with power tools, and replacing them.

6.   Dong presented casts of skull bones from the newly identified dinosaur to Crichton during a ceremony Tuesday at the North Carolina Museum of Natural Sciences.

7.   The new Neanderthal age dates are based on material removed from a jawbone and a skull bone found in the Croatian cave.