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Temporal range: Middle Triassic
Diademodon mastacus.jpg
Diademodon tetragonus skull at the Museum für Naturkunde, Berlin
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Order: Therapsida
Suborder: Cynodontia
Family: Diademodontidae
Genus: Diademodon
Seeley, 1894
Type species
Diademodon tetragonus
Seeley, 1894


  • Cragievarus Brink, 1965


  • Cragievarus kitchingi Brink, 1965
  • D. grossarthi Brink, 1979
  • D. mastacus Brink, 1979
  • D. rhodesiensis Brink, 1979
  • Trirachodon browni Broom, 1915
Life restoration

Diademodon is an extinct genus of cynodont therapsid. It was about 2 metres (6.6 ft) long and probably omnivorous.[1] The genus was first described by paleontologist Harry Seeley in 1894 from the Karoo Basin of South Africa. Additional species were named by paleontologist A. S. Brink in 1979, although they are now considered synonyms of the type species Diademodon tetragonus. Fossils of the Diademodon tetragonus have more recently been found in deposits of the Rio Seco de la Quebrada Formation in Mendoza Province, Argentina.[2]

Other Related Genera[edit]


  1. ^ Botha, J.; Lee-Thorp, J.; Chinsamy, A. (2005). "The palaeoecology of the non-mammalian cynodonts Diademodon and Cynognathus from the Karoo Basin of South Africa, using stable light isotope analysis". Palaeogeography, Palaeoclimatology, Palaeoecology. 223 (3–4): 303. doi:10.1016/j.palaeo.2005.04.016. 
  2. ^ Martinelli, A. N. G.; Fuente, M. D. L.; Abdala, F. (2009). "Diademodon tetragonus Seeley, 1894 (Therapsida: Cynodontia) in the Triassic of South America and its biostratigraphic implications". Journal of Vertebrate Paleontology. 29 (3): 852. doi:10.1671/039.029.0315.