Tropidostoma is an extinct genus of dicynodont therapsid.[1] Two morphotypes exist among the specimens referred to T. dubium, namely a robust form with a tall snout and large tusks ("D. dubius", "D. cavifrons", and "D. validus"), and a gracile form with a low snout and small tusks (C. platyceps", "D. rogersi", and "D. acutirostris"). This may represent sexual dimorphism or individual variation.[2]

See also


  1. ^ Botha, J.; Angielczyl, K.D. (2007). "An integrative approach to distinguishing the Late Permian dicynodont species Oudenodon bainii and Tropidostoma microtrema (Therapsida: Anomodontia)". Palaeontology. 50 (5): 1175–1209. doi:10.1111/j.1475-4983.2007.00697.x. 
  2. ^ Kammerer, C.F.; Smith, R.M.H. (2017). "An early geikiid dicynodont from the Tropidostoma Assemblage Zone (late Permian) of South Africa". PeerJ. 5. doi:10.7717/peerj.2913. ISSN 2167-8359.