Natural History Museum Of Zimbabwe

Arnoldia Zimbabwe Vol 9(7) 1982 COOPER M.R. A Mid-Permian to earliest Jurassic Tetrapod biostratigraphy and its significance. p77-104

The striking similarities between the continental tetrapod faunas of Gondwanaland and Laurasia during the Mid-Permian to earliest Jurassic interval provide evidence for unhindered migration between the two land masses and suggest the presence of a super continent at the time.