What is a theradont?

Answer 1

Cynodontia or cynodonts ("dog teeth") are a taxon of therapsids endemic to all seven continents beginning during the Early Triassic 256 Ma. This taxon includes modern mammals and their extinct close relatives. They were one of the most diverse groups of therapsids. They are named after their dog-like teeth.

This is a correction to the non-existing theradont.