There are different opinions on whether Claraia appeared in the Late Permian or not. It is convinced that Claraia had turned up in the Late Permian through the study on the Upper Permian in South China. Pseudoclaraia, Claraioides and Claraia are compared and they are found to bear basically the same features. According to the rule of nomenclatural priority, Pseudoclaraia and Claraioides should be attributed to the genus Claraia. Late Permian Claraia lived in the middle-lower part of the bathyal continental slope as epifauna, which could swim occasionally. The study on Claraia of the Permian-Triassic transition shows that Triassic Claraia was evolved from Permian Claraia. There are different opinions on whether Claraia was in the Late Permian or not. It is convinced that Claraia had turned up in the Late Permian through the study on the Upper Permian in South China. Pseudoclaraia, Claraioides and Claraia are compared and they are found to bear basically the same features. According to the rule of nomenclatural priority, Pseudoclaraia and Claraioides should be attributed to the genus Claraia. Late Permian Claraia lived in the middle-lower part of the bathyal continental slope as epifauna, which could swim occasionally. on Claraia of the Permian-Triassic transition shows that Triassic Claraia was evolved from Permian Claraia.