Dr. Holtz speaks The new fossil verrtebrate halls of the American Museum organize the specimens strictly according to evolutionary history. In fact, while exploring the exhibits, one walks along a "cladogram" or schematic tree of evolutionary history tiled into the floor. Branches of the cladogram lead to alcoves in which each specimens and information on each major group of closely related organisms is displayed. While signs and labels provide basic information, nteractive computer displays allow visitors to obtain more in-depth information.

Before leaving the paleontology halls, Dr. Holtz wraps up the major points. Did the camera catch him blinking, or was he rhapsodizing over the updated skeletal mount of Apatosaurus behind him?.