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Leaf fossils of Sabalites (Arecaceae) from the Oligocene of northern Vietnam and their paleoclimatic implications.

Authors :
Song A
Liu J
Liang SQ
Van Do T
Nguyen HB
Deng WY
Jia LB
Del Rio C
Srivastava G
Feng Z
Zhou ZK
Huang J
Su T
Source :
Plant diversity [Plant Divers] 2021 Sep 03; Vol. 44 (4), pp. 406-416. Date of Electronic Publication: 2021 Sep 03 (Print Publication: 2022).
Publication Year :
2021

Abstract

Recent paleobotanical investigations in Vietnam provide a good opportunity to improve our understanding of the biodiversity and paleoclimatic conditions in the geological past of Southeast Asia. Palms (Arecaceae) are a diverse family of typical thermophilous plants with a relatively low tolerance for freezing. In this study, we describe well-preserved fossil palm leaves from the Oligocene Dong Ho Formation of Hoanh Bo Basin, northern Vietnam. Characters of the fossil leaves, such as a fan-shaped costapalmate lamina, an unarmed petiole, a costa slightly enlarged at the base that then tapers distally into the blade, and well-preserved amphistomatic leaves with cuticles, suggest that they represent a new fossil species, which we herein designate Sabalites colaniae A. Song, T. Su, T. V. Do et Z.K. Zhou sp. nov. Together with other paleontological and palaeoclimatic evidence, we conclude that a warm climate prevailed in northern Vietnam and nearby areas during the Oligocene.<br />Competing Interests: We have no competing interest.<br /> (© 2021 Kunming Institute of Botany, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.)

Details

Language :
English
ISSN :
2468-2659
Volume :
44
Issue :
4
Database :
MEDLINE
Journal :
Plant diversity
Publication Type :
Academic Journal
Accession number :
35967257
Full Text :
https://doi.org/10.1016/j.pld.2021.08.003