Syodon

Syodon
Temporal range: Middle Permian
Skull in Moscow Paleontological Museum
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Suborder: Dinocephalia
Family: Anteosauridae
Genus: Syodon
Kutorga, 1838
Species:
S. biarmicum
Binomial name
Syodon biarmicum
Kutorga, 1838

Syodon (from Greek: kleio, "close, shut" and Greek: odon, "tooth", "closed-root tooth") is an extinct genus of dinocephalian therapsids that lived approximately 267-260 million years ago during the middle Permian period of the Paleozoic era. These therapsids, discovered in Russia were initially believed to be true mammals. Syodon was first named by Stephan Kutorga in 1838.