Mastodonsauridae

Mastodonsauridae Temporal range: 250.0–199.6 Ma PreЄ Є O S D C P T J K Pg N Triassic
Skull of Heptasaurus cappelensis
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Order:	†Temnospondyli
Suborder:	†Stereospondyli
Clade:	†Capitosauria
Superfamily:	†Mastodonsauroidea
Family:	†Mastodonsauridae Lydekker, 1885
Synonyms
Capitosauridae Watson, 1919

Mastodonsauridae is a family of capitosauroid temnospondyls. Fossils belonging to this family have been found in North America, Greenland, Europe, Asia, and Australia. The family Capitosauridae (also known as Cyclotosauridae and Stenotosauridae) is synonymous with Mastodonsauridae.