代旭，中国地质大学（武汉）地球科学学院地球生物学系“地大百人”计划特任教授。

研究方向

地质历史时期生命与环境协同演化，重点关注古生代-中生代之交海洋生物演化。

研究兴趣与招生方向

1. 二叠纪-三叠纪之交生物大灭绝与海洋生态系统重建以及现代类型海洋生态系统的起源；

2. 头足类分类学、生物地层学、系统发生、生物多样性和生物古地理； 

3. 计算古生物学(定量生物地层、多样性、生物古地理、形态测量、分支系统学等)；

4. 深时极热事件背景下生物的演化规律；

5. 青藏高原三叠纪古生物学与地层学。

欢迎对古生物学与地层学感兴趣的本科生、硕士生、博士生及博士后邮件联系（xudai@cug.edu.cn)

主要学术成果

1. 发现贵阳生物群，揭示二叠纪-三叠纪之交生物大灭绝后海洋生态系统快速重建和现代类型海洋生态系统的雏形 (Dai et al., 2023, Science)；

2. 建立了我国华南和藏南早三叠世格里斯巴赫亚期至史密斯亚期高精度菊石生物地层 (Dai et al., 2019, Journal of Paleontology; 2021, Global and Planetary Change; 2023, Earth-Science Reviews)；

3. 发现早三叠世格里斯巴赫亚期一次快速生物复苏现象，并提出生物多幕式复苏模式 (Dai et al., 2018, GSA Bulletin)；

4. 揭示二叠纪-三叠纪生物大灭绝事件中菊石形态演化过程，否定了前人在Science论文中认为的非选择性灭绝模式 (Dai et al., 2021, Geology)；

5. 定量证实早三叠世菊石出现了两次全球化现象并阐明了其内在机制 (Dai et al., 2020, Paleobiology)。

研究成果两次入选中国古生物年度十大进展（均为第二完成人）。

发表论文

目前已经发表学术论文25篇，其中第一/通讯作者论文8篇，包括Science、Geology、Earth-Science Reviews等期刊。（*表示通讯作者）

2023年 

• Dai, X., Davies J.H.F.L., Yuan, Z., Brayard, A., Ovtcharova, M., Xu, G., Liu, X., Smith, C.P.A., Schweitzer, C.E., Li, M., Perrot, M.G., Jiang, S., Miao, L., Cao, Y., Yan, J., Bai, R., Wang, F., Guo, W., Song, H., Tian, L., Dal Corso, J., Liu, Y., Chu, D. and Song, H.*, 2023. A Mesozoic fossil lagerstätte from 250.8 million years ago shows a modern-type marine ecosystem. Science. 379(6632): 567–572.

• Dai, X.*, Brayard, A., Ware, D., Jiang, S., Li, M., Wang, F., Liu, X. and Song, H.*, 2023. High-resolution Early Triassic ammonoid biostratigraphy of South Tibet, China and implications for global correlations. Earth-Science Reviews. 239: 104384.

• Yan, J., Song, H. and Dai, X.*, 2023. Increased bivalve cosmopolitanism during the mid-Phanerozoic mass extinctions. Palaeogeography, Palaeoclimatology, Palaeoecology, 611: 111362.

• Pohl, A., Stockey, R.G., Dai, X., Yohler, R., Le Hir, G., Hülse, D., Brayard, A., Finnegan, S., and Ridgwell, A., 2023. Why the Early Paleozoic was intrinsically prone to marine extinction. Science Advances, 9(35):eadg7679.

• Li, M., Tian, L., Wignall, P.B., Dai, X., Lin, W., Cai, Q. and Song, H., 2023. Expansion of microbial-induced carbonate factory into deeper water after the Permian-Triassic mass extinction. Global and Planetary Change, 230: 104274.

2022年 

• Wang, F., Chen, J.*, Dai, X. and Song, H., 2022. A new Early Triassic brachiopod fauna from southern Tibet, China: Implications on brachiopod recovery and the late Smithian extinction in southern Tethys. Journal of Paleontology, 96(S88): 1–32.

• Yuan, Z., Xu, G.*, Dai, X., Wang, F., Liu, X., Jia, E., Miao, L. and Song, H.*, 2022. A new perleidid neopterygian fish from the Early Triassic (Dienerian, Induan) of South China, with a reassessment of the relationships of Perleidiformes. PeerJ, 10: e13448.

• Miao, L., Dai, X., Song, H., Backes, A.R. and Song, H.*, 2022. A new index for quantifying the ornamentational complexity of animals with shells. Ecology and Evolution, 12(8): e9247.

2021年 

• Dai, X., Korn, D. and Song, H.*, 2021. Morphological selectivity of the Permian-Triassic ammonoid mass extinction. Geology, 49(9): 1112–1116.

• Dai, X., Yuan, Z., Brayard, A., Li, M., Liu, X., Jia, E., Du, Y., Song, H. and Song, H.*, 2021. Calibrating the late Smithian (Early Triassic) crisis: New insights from the Nanpanjiang Basin, South China. Global and Planetary Change, 201: 103492.

• Miao, L., Dai, X., Korn, D., Brayard, A., Chen, J., Liu, X. and Song, H.*, 2021. A Changhsingian (Late Permian) nautiloid assemblage from Gujiao, South China. Papers in Palaeontology, 7(1): 329–351.

• Song, H.*, Kemp, D.B.T., Li, Chu, D., Song, H. and Dai, X., 2021. Thresholds of temperature change for mass extinctions. Nature Communications, 12: 4694.

• Li, M., Wignall, B.P., Dai, X., Hu, M. and Song, H.*, 2021. Phanerozoic variation in dolomite abundance linked to oceanic anoxia. Geology, 49(6): 698–702.

2020年 

• Dai, X. and Song, H.*, 2020. Toward an understanding of cosmopolitanism in deep time: a case study of ammonoids from the middle Permian to the Middle Triassic. Paleobiology, 46(4): 533–549.

• Jiang, S., Song, H.*, Kemp, D.B., Dai, X. and Liu, X., 2020. Two pulses of extinction of larger benthic foraminifera during the Pliensbachian-Toarcian and early Toarcian environmental crises. Palaeogeography, Palaeoclimatology, Palaeoecology, 560(15): 109998.

• Song, H.*, Huang, S., Jia, E., Dai, X., Wignall, P.B. and Dunhill, A.M., 2020. Flat latitudinal diversity gradient caused by the Permian–Triassic mass extinction. PNAS, 117(30): 17578–17583.

2019年 

• Dai, X., Song, H.*, Brayard, A. and Ware, D., 2019. A new Griesbachian–Dienerian (Induan, Early Triassic) ammonoid fauna from Gujiao, South China. Journal of Paleontology, 93(1): 48–71.

• Li, M., Song, H.*, Wignall, P.B., She, Z., Dai, X., Song, H. and Xiao, Q., 2019. Early Triassic oceanic red beds coupled with deep sea oxidation in South Tethys. Sedimentary Geology, 391: 105519.

• Li, M., Song, H.*, Woods, A.D., Dai, X. and Wignall, P.B., 2019. Facies and evolution of the carbonate factory during the Permian–Triassic crisis in South Tibet, China. Sedimentology, 59: 646–678.

• Song, H.*, Wignall, B.P., Song, H., Dai, X. and Chu, D., 2019. Seawater Temperature and Dissolved Oxygen over the Past 500 Million Years. Journal of Earth Science, 30(2): 236–243.

2018年 

• Dai, X., Song, H.*, Wignall, P.B., Jia, E., Bai, R., Wang, F., Chen, J. and Tian, L., 2018. Rapid biotic rebound during the late Griesbachian indicates heterogeneous recovery patterns after the Permian-Triassic mass extinction. Geological Society of America Bulletin, 130(11–12): 2015–2030.

• Li, M., Song, H.*, Algeo, T.J., Wignall, P.B., Dai, X. and Woods, A.D., 2018. A dolomitization event at the oceanic chemocline during the Permian-Triassic transition. Geology, 46(12): 1043-1046.

• Li, M., Song, H.*, Tian, L., Woods, D.A., Dai, X. and Song, H., 2018. Lower Triassic deep sea carbonate precipitates from South Tibet, China. Sedimentary Geology, 376: 60–71.

2017年 

• Bai, R., Dai, X. and Song, H.*, 2017. Conodont and Ammonoid Biostratigraphies around the Permian-Triassic Boundary from the Jianzishan of South China. Journal of Earth Science, 28(4): 595–613.

• Wang, F., Chen, J.*, Dai, X. and Song, H.*, 2017. A new Dienerian (Early Triassic) brachiopod fauna from South China and implications for biotic recovery after the Permian–Triassic extinction. Papers in Palaeontology, 3(3): 425–439.