Temporal range: Late Permian-Present, 260–0 Ma
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

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:



Dvinia prima

Procynosuchus delaharpeae


Nythosaurus larvatus

Galesaurus planiceps

Progalesaurus lootsbergensis

Cynosaurus suppostus

Vetusodon elikhulu

Thrinaxodon liorhinus

Nanictosaurus kitchingi

Platycraniellus elegans

Bolotridon frerensis


This page was last updated at 2024-02-10 11:13 UTC. Update now. View original page.

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