|pF||Paleontologic Fossil, bones, part of full skeletons of prehistoric animals, fishes. Footprint of prehistoric animals, plants etc. in stones.|
|pR||Paleontologic Reconstruction of prehistoric animals, birds, fishs, insects, plants etc.|
|An||Paleo-Antropology: fossil or reconstruction of prehistoric Human, Cave painting, tools of prehistoric man, etc...|
|Pp||Professional Paleontologists or Paleoantropologists|
|Co||Contributors: Amateurs paleontologist, fossil collectors, patrons, sponsors of Paleontological expeditions, museums, none paleontologist but scientists at other fields who made or make an influence on a Paleontology or Paleoanthropology.|
|Dw||Charles Darwin: stamps depicting Charles Darwin
Due the fact there are many, they are organized in the separate group.
|Ot||Others: paleontological Museums, Research Institutes, fossil sites, etc...|
stamps were 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."