The Texas Natural Science Center is a fascinating place to visit. I have always been interested in fossils, and the brochure given at the visitor's desk indicated that the fossil collection was on the second floor. I walked up the stairs to the second floor, and stepped into a large room, about the size of a basketball court, filled with exhibits of rocks, fossils, and bones. The walls of the room consisted of a combination of dark-brown marble slabs about ten feet high, and white, rectangular-shaped tiles running above the marble slabs to the ceiling. The floor was made of large, expensive-looking brown stone tiles. Decorative, circular-shaped medallions, approximately two-feet in diameter and spaced about three feet apart, extended around the walls near the ceiling. In one corner, six small flags were displayed between two of the medallions, two of which I immediately recognized as the U.S. and Mexican flags. I also noticed that several large white curtains hung over windows at one end of the room. Approximately twenty rectangular-shaped glass exhibits that contained prehistoric rocks, fossils, and bones, were on display. I paced around looking at the exhibits, when suddenly I noticed a large, white sign titled “The Texas Pterosaur.” The first sentence said, “Above you is the largest flying creature ever discovered.” I immediately looked up and my eyes gazed on the skeletal remains of an enormous creature hanging from the ceiling. It had very long legs, a large wingspan, a neck about the length of a yardstick, a relatively small body, and a pointy tail. The sign explained that the remains had been found in 1971 by a graduate student working with the Texas Memorial Museum and that it had a wingspan of approximately 40 feet. Although I assumed that the creature was some type of bird or bat, the sign explained that the pterosaur was not a close relative to either of those animals. My journey had just begun, and I decided to