| Rhuddanium | Rhuddanian |
| Danium | Danian |
| Laudanum | laudanum |
| Rhenium | rhenium |
| Ruthenium | ruthenium |
| Rhodium | rhodium |
| Thaddäus | Thaddeus Thaddaeus |
| Capitanium | Capitanian |
| Cenomanium | Cenomanian |
| Unobtanium | unobtainium |
| Cranium | cranium |
| Germanium | germanium |
| Humanist | humanist |
| Kranium | skull cranium |
| Rumänien | Romania |
| Rumänin | Romanian |
| Ladinium | Ladinian |
| Röntgenium | roentgenium |
| Roentgenium | roentgenium |
| Aluminium | aluminium aluminum |