| Categories and criteria | Subcategories |
| 1) General data | Code, location, type and properties |
| 2) Descriptive data | a) Anatomy, b) morphogenesis |
| 3) Scientific value | a) Maintainance condition, b) indicator, c) rarity, d) paleogeography |
| 4) Added value | a) Ecological value, b) aesthetic value, c) cultural value, d) economic value |
| 5) Compound | a) Global value, b) educational value, c) threats, d) level of management |