长兴一带二叠—三叠系界线上下鱼类序列研究

This project gave a fish evolutionary sequence near the P-T boundary at.Zhongxin Dadui section of Meishang, Changxing district, Zhejiang Province, China. The fish sequence is established by means of the morphological and histological studies of both micro- and.macrofossils of actinopterygians, sarcopterygians and chondrichthyans, and the comparison of fish fossils from adjacent regions. The fish sequence filled in a gap in the study of fossils near the GSSP of the P-T boundary at Changxing and showed a selective extinction both near the.eventostratigraphic and biostratigraphic boundaries.

全球二叠—三叠系界线层型剖面点的选择倍受关注。本项目通过对长兴一带Ｐ—Ｔ界线上下３个亚纲鱼类微体化石和大化石形态学和古组织学研究，与邻区不同相区鱼化石对比，建立长兴煤山剖面Ｐ－Ｔ界线提出建议。本项研究不仅强化了煤山剖面生物地层学成果，而且填补了全球这一界线上下化石研究的一项空白。