Epicynodontia

Epicynodontia
Temporal range: Late Permian-Present,
Skeleton of Thrinaxodon liorhinus, a basal epicynodont
Sperm whale, a modern-day epicynodont
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Clade: Cynodontia
Clade: Epicynodontia
Hopson & Kitching, 2001
Subgroups

Epicynodontia is a clade of cynodont therapsids that includes most cynodonts, such as galesaurids, thrinaxodontids, and Eucynodontia (including mammals). It was erected as a stem-based taxon by Hopson and Kitching (2001) and defined as the most inclusive clade containing Mammalia and excluding Procynosuchus, a Late Permian genus that is one of the most basal cynodonts.

Below is a cladogram from Pusch et al. (2023) showing one hypothesis of cynodont relationships:

Cynodontia