Article: New vertebrate evidence for a southern Transatlantic connexion during the Lower or Middle Triassic

Two species of therapsid reptile found in rocks of probable Lower Anisian age, in the Province of Mendoza, Argentina, are compared with similar forms from the Cynognathus Zone of South Africa. One of them is a dicynodont, Kannemeyeria argentinensis, which differs from the African form Kannemeyeria erithrea in only minor details. The other is a cynodont, Pascualgnathus polanskii, which shows very clear similarities to the African genera Trirachodon and Diademodon. The striking affinities of these Argentine species with African forms are interpreted by the author as evidence that Africa and South America were connected in some way during the Lower Triassic time.