A supercontinent comprising all of Earth’s landmass, before it was split by continental drift. Crowley et al. (1989) Geology 17, 5 find that very high summer temperatures and a large annual range are major features of supercontinents; a finding with implications for Permian extinctions.
See W. M. Marsh and M. M. Kaufman (2012), p. 246 on the movements of India during the break-up of Pangaea.