(1) Does the site provide fossils which cover and extended period of geological time: i.e. how wide is the geological window?
(2) Does the site provide specimens of a limited number of species or whole biotic assemblages: i.e. how rich is the species diversity?
(3) How unique is the site in yielding fossil specimens for that particular period of geological time: i.e. would this be the type locality' for study or are there similar areas that are alternatives?
(4) Are there comparable sites elsewhere that contribute to the understanding of the total story of that point in time/space: i.e. is a single site nomination sufficient or should a serial nomination be considered?
(5) Is the site the only main location where major scientific advances were (or are) being made that have made a substantial contribution to the understanding of life on Earth?
(6) What are the prospects of ongoing discoveries at the site?
(7) How international is the level of interest in the site?
(8) Are there other features of natural value (e.g. scenery, landform, vegetation) associated with the site: i.e. does there exist within the adjacent area modern geological or biological processes that relate to the fossil resource?
(9) What is the state of preservation of specimens yielded from the site?
(10) Do the fossils yielded provide an understanding of the conservation status of contemporary taxa and/or communities: i.e. how relevant is the site in documenting the consequences to modern biota of gradual change through time?
* A condition for granting World Heritage status should include provision for curation, study and display of any site/fossils.