Middle Triassic synapsids

Menadon is an extinct genus of traversodontid cynodonts. The type and only species is Menadon besairiei.

Sinognathus is an extinct genus of gomphodont cynodonts from the Middle Triassic Ermaying Formation of China. Its type and only species is Sinognathus gracilis, which was named in 1959 by the Chinese palaeontologist C. C. Young.