Family | genus | species | author | Type Number | Category |
Chthoniidae | Chthonius | johnstoni | Chamberlin | 1266 | holotype |
Chthoniidae | Kewochthonius | amplus | Schuster | 8704 | holotype |
Chthoniidae | Kewochthonius | spingolus | Schuster | 8705 | holotype |
Chthoniidae | Neochthonius | imperialis | Muchmore | 17326 | holotype |
Chthoniidae | Pseudotyrannochthonius | rossi | Beier | 8696 | holotype |