Mastersonia

Mastersonia
Temporal range:
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Suborder: Dinocephalia
Genus: Mastersonia
Olson, 1962
Species:
M. driverensis
Binomial name
Mastersonia driverensis
Olson, 1962

Mastersonia is an extinct genus of non-mammalian therapsids from the Lower Permian of San Angelo Formation, Texas. It is only known from a few, very large vertebrae.