Many of the fossils, as well as minerals, from South Dakota will fluoresce due to the replacement of the fossil by calcite and chalcedony. The calcite will fluoresce from white to yellow to orange. The chalcedony usually shows up as a green fluorescence. Usually the stronger fluorescence is under long wave and is the first photo shown in the fluorescents (South Dakota) section of the web site. Chalcedony usually does not fluoresce well under long wave, but does fairly well for the fossils from this area.
Also check out other South Dakota fluorescent offerings under the Fluorescents section. Then click on the "To view specimen material from South Dakota" link. Some other normal light photos will be shown there as well.
Most of the specimens below are also available in the fossil section. It will have the same item number followed by an "N."