The book is conceived as an illustrated catalog, and thus the photographic section makes up the largest part, which illustrates 100 specimens with the help of very high-quality and detailed photographs. Each specimen is supplemented with information on the taxonomic classification and the actual size, sex and origin of the concrete specimen.
The second important part of the book is a clearly arranged, hierarchic list of the specimens. This list illustrates graphically the taxonomic classification of the different specimens, and it is possible from it to deduce quickly and easily the biological classification in family, subfamily, supertribe, tribe, genus and species. Data on the size of the specimen and where it was found is supplemented by information on the range of the given specimen’s distribution.
The classification of the species in a supertribe is differentiated according to color for greater clearness, both in the list and in the main part of the catalog.
In the introduction to the book, the author acquaints the reader with the subfamily Prioninae and what still belongs to and no longer belongs to the group of Prionids, and he offers a short preview of new classification methods based on DNA.