|pF||Paleontologic Fossil, bones, part of full sceletons of prehistoric animals, fishes. Footprint of prehistoric animals, palnts etc. in stones.|
|pR||Paleontologic Reconstruction of prehistoric animals, birdes, fisch, insekten , plants etc...|
|An||Paleo-Antropology: fossil or reconstruction of preistoric Human, Cave painting, tools of prehistoric man, etc...|
|Pp||Professional Paleontologists or Antropologists|
|Co||Contributors: Amateurs paleontologist, fosills collectors, patrons, sponsors of Paleontologic exspeditions, museums, none paleontologist but scientists at other felds who made or make some influence on a Paleontologic science.|
Darwin: stamps depicting Charles Darwin
Due the fact there are a lot of stamps depicting Charles Darwin they are organized at separated group.
|Ot||Others: paleontological Museums, Research Institutes, paleontologic sites where major fosilities found.|
Commercial issue: stamps are issued with only one purpose - to be sold for collectors. Stamp of countries who issued too many or too expensive stamps.
According to SPECIAL REGULATIONS FOR THE EVALUATION OF THEMATIC EXHIBITS AT FIP EXHIBITIONS "Appropriate postal-philatelic material is that which, for the purpose of transmitting mail or other postal communications, has been issued, intended for issue, or produced in the preparation for issue, used, or treated as valid for postage by governmental, local or private postal agencies, or by other duly commissioned or empowered authorities."