This folder contains two printout files of information on ammonites, including class, genus, subgenus, species, subspecies, locality number, age, formation and state found. The first file is sorted by class and genus, the second is sorted by age. A read out key is included in the front of the file explaining state/nation abbreviations, invertebrate class code, continent code, ocean code, collection room code, type symbol, map scale, and CF and AFF codes. The file is undated.