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Temporal range: 250.0–199.6 Ma
Heptasaurus kappelensis.jpg
Skull of Heptasaurus cappelensis
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Order: Temnospondyli
Suborder: Stereospondyli
Clade: Capitosauria
Superfamily: Mastodonsauroidea
Family: Mastodonsauridae
Lydekker, 1885
  • 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.



  • Ross J. Damiani.Early Triassic mastodonsaurids (Temnospondyli, Stereospondyli) from Western Australia, with remarks on mastodonsauroid palaeobiogeography. Alcheringa: An Australasian Journal of Palaeontology, Volume 24, Issue 4 2000, pages 299 - 305. (Abstract)
  • Moser, Markus& Schoch, Rainer 2007 "Revision of the type material and nomenclature of Mastodonsaurus giganteus (Jaeger) (Temnospondyli) from the middle Triassic of Germany" Palaeontology 505:1245-1266