| THERAPSIDA Broom, 1905 |
| THEROCEPHALIA Broom, 1903 |
| EUTHEROCEPHALIA Hopson & Barghusen, 1986 |
| AKIDNOGNATHIDAE Nopsca, 1928 |
| SHIGUAIGNATHUS WANGI gen. et. sp. nov. |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.