通过对浙江长兴煤山剖面二叠-三叠系界线层沉积相分析及牙形石演化规律研究，提出了该时期Clarkina（Neogondolella）, Hindeodus两类重要牙形石属的生态新模式。（1）Clarkina 是一种底栖自由游泳生物,可出现于远岸浅海至盆地相较深水环境；（2）Hindeodus是一种洋面浮游型生物，死亡之后可沉于海底的滨、浅海至深水盆地各种环境之中，并可渡过二叠-三叠纪之交海底缺氧事件这一难关，在早三叠世得到发展；因此，Hindeodus可作为全球二叠-三叠系界线划分对比的可靠证据。

The red paleosols (Oxisols) in southern China provide a record of global climate oscillation during at least the last 0.80 Ma. Here we present a correlation between the marine oxygen isotope record (stage 11–21) and the paleosol molecular fossil signature in the fourth Xiushui river terrace in southern China. Temporal variations seen in two molecular ratios-C15-21/C22-33 n-alkanes and pristane to phytane (Pr/Ph)—down the paleosol profile are postulated to have arisen from variations in biological input and subsequent pedogenesis in response to the changing strength of the East Asian summer monsoon climate. The preliminary findings suggest strong couplings among the soil, vegetation and climate, and provide a basis for a correlation between the terrestrial and oceanic records.