Fossil involucres of Ostrya (Betulaceae) from the early Oligocene of Yunnan and their biogeographic implications |
| |
Institution: | 1. CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China |
| |
Abstract: | A new fossil occurrence of Ostrya (Betulaceae) is reported based on 14 involucre impressions from the lower Oligocene of Löhe Basin, Yunnan Province, Southwest China. They are characterized by their bladder-like shape with longitudinal veins and perpendicular or branched intercostal veins that form a reticulate venation. The discovery of these fossil involucres represents the earliest unequivocal fossil record of Ostrya in East Asia and the record at the lowest latitude. Its fossil history suggests that the modern distribution pattern of Ostrya might have been established since the early Oligocene, and that this genus has inhabited low altitude areas since then. |
| |
Keywords: | Fruit Involucre Early Oligocene Yunnan Betulaceae |
本文献已被 ScienceDirect 等数据库收录! |
|