Bauhinia (Leguminosae) Fossils from the Paleogene of Southwestern China and Its Species Accumulation in Asia

作者：Lin‐Bo Jia, Jinjin Hu, Shitao Zhang, Tao Su, Robert A. Spicer, Jia Liu, Jiucheng Yang, Pu Zou, Yong‐Jiang Huang, Zhe‐Kun Zhou · 发表于：Diversity · 年份：2022 · DOI：10.3390/d14030173 · 被引用次数：8 · 研究领域：Plant Diversity and Evolution、Plant and Fungal Species Descriptions、Plant and animal studies

Extant Bauhinia (Leguminosae) is a genus of 300 species of trees, shrubs, and lianas, widely distributed in pantropical areas, but its diversification history in southeastern Asia, one of its centers of highest diversity, remains unclear. We report new fossils of three Bauhinia species with cuticular preservation from the Paleogene of Puyang Basin, southwestern China. Our finding likely extends the emergence of Bauhinia in Asia to the late Eocene. Together with previously reported fossil records, we show that the diversification of Bauhina in Asia and the phenomenon of a small region harboring multiple Bauhinia species in southwestern China could be traced back to the Paleogene.