Many problems remain in the understanding of the Late Palaeozoic glaciation. Existing and new evidence suggests that the period and extent of glaciation were more limited than sometimes supposed. The main glaciation, identified, especially by moraine, in southern Africa, the Arabian Peninsula, India, Tibet, Australia, South America, and Antarctica may have been confined to the Early Permian (Asselian). Data for continental ice sheet conditions are lacking. The main glaciation was followed in the Sakmarian (Tastubian) by a eustatic rise in sea level. Subsequent to this, neither moraine nor glaciers can be identified, although in Australia and, possibly, Siberia the climate remained cold. In the Upper carboniferous, deposited before the main glaciation, evidence for moraine is found in South America and Australia and, possibly, northeastern Siberia, but this appears to be mountain glaciation and there is no evidence for any extensive ice sheet.