a number of other families
Eucynodontia includes the most mammal-like of the "mammal-like reptiles" and all of their descendants; (ie: mammals). The name means 'true dog teeth'. Eucynodonts are first known from fossils of the Lower Triassic, though some specimens have been reported from the earlier Upper Permian.
More information will follow.
(This information has been derived from  Mesozoic Eucynodonts. As that's my webpage, there are no issues of copyright. Trevor Dykes)