| A (3 species) |
| Albalophosaurus - Early Cretaceous |
| Asiaceratops - Late Cretaceous, 99 Ma |
| Avaceratops - Late Cretaceous, 77 Ma |
| B (0 species) |
| C (1 species) |
| Chaoyangsaurus - Late Jurassic, 148 Ma |
| D (0 species) |
| E (0 species) |
| F (0 species) |
| G (0 species) |
| H (0 species) |
| I (0 species) |
| J (0 species) |
| K (0 species) |
| L (0 species) |
| M (1 species) |
| Mosaiceratops - Late Cretaceous, 94-72 Ma |
| N (1 species) |
| Notoceratops - Late Cretaceous |
| O (0 species) |
| P (0 species) |
| Q (0 species) |
| R (0 species) |
| S (2 species) |
| Sphaerotholus - Late Cretaceous, 73 Ma |
| Stenopelix - Early Cretaceous, 127 Ma |
| T (0 species) |
| U (0 species) |
| V (0 species) |
| W (1 species) |
| Wendiceratops - Late Cretaceous, 79-78.7 Ma |
| X (1 species) |
| Xuanhuaceratops - Late Jurassic, 167.7-161.2 Ma |
| Y (1 species) |
| Yinlong - Late Jurassic, 158 Ma |
| Z (1 species) |
| Zuniceratops - Late Cretaceous, 91 Ma |