Epicynodontia
| Epicynodontia Temporal range: Late Permian-Present,
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| Skeleton of Thrinaxodon liorhinus, a basal epicynodont | |
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| Sperm whale, a modern-day epicynodont | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Synapsida |
| Clade: | Therapsida |
| Clade: | Cynodontia |
| Clade: | Epicynodontia Hopson & Kitching, 2001 |
| Subgroups | |
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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.[1]
Below is a cladogram from Pusch et al. (2023) showing one hypothesis of cynodont relationships:[2]
| Cynodontia |
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