Significance of Claraia from the late permian of South Guizhou, China

Recently collecte material of two Claraia taxa, Claraia zhiyunica Yang et al, 2001 and Claraia sp. nov. from the Late Permian of South China, are described. Late Permian Claraia species are compared with those from the Early Triassic, and the survival of Claraia across the mass extinction period across the Permian- Triassic boundary (PTB) is discussed.