Fossil woods of Cryptocarya (Lauraceae) from the middle Miocene of Southwest China

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology Pub Date : 2024-03-22 DOI:10.1016/j.revpalbo.2024.105096

Rui Zhang , Lu-Liang Huang , Shu-Feng Li , Tao Su , Alexei A. Oskolski

{"title":"Fossil woods of Cryptocarya (Lauraceae) from the middle Miocene of Southwest China","authors":"Rui Zhang , Lu-Liang Huang , Shu-Feng Li , Tao Su , Alexei A. Oskolski","doi":"10.1016/j.revpalbo.2024.105096","DOIUrl":null,"url":null,"abstract":"<div>The structure of lauraceous fossil woods from the middle Miocene deposits of the Dajie Formation of Ninger County, Yunnan Province, China has been studied. The occurrence of wide (> 7 seriate) rays in combination with the presence of scalariform perforation plates, the oil/mucilage cells in rays, axial parenchyma and among fibers as well as some other traits allow us to attribute the fossil woods to the extant genus Cryptocarya. We describe the woods as a new species C. latiradiata R. Zhang, T. Su & A. A. Oskolski sp. nov. (Lauraceae). This is an important improvement in the fossil record of Cryptocarya showing that this genus was widely ranged across southern China in the middle Miocene. The occurrence of the fossil woods of such termophyllous genus as Cryptocarya in the Dajie Formation suggests that this middle Miocene climate in southern Yunnan was frostless. This result is consistent with other evidence for the warm environment caused by complex topographic structures in this region since the middle Miocene linked to the successive uplift of the Tibetan Plateau and the Ailao Mountains. Particularly, it suggests that the Ailao Mountains in the middle Miocene were high enough to weaken the influence of the Asian Winter Monsoon on the territory of Yunnan.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"324 ","pages":"Article 105096"},"PeriodicalIF":1.7000,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Review of Palaeobotany and Palynology","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0034666724000472","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PALEONTOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

The structure of lauraceous fossil woods from the middle Miocene deposits of the Dajie Formation of Ninger County, Yunnan Province, China has been studied. The occurrence of wide (> 7 seriate) rays in combination with the presence of scalariform perforation plates, the oil/mucilage cells in rays, axial parenchyma and among fibers as well as some other traits allow us to attribute the fossil woods to the extant genus Cryptocarya. We describe the woods as a new species C. latiradiata R. Zhang, T. Su & A. A. Oskolski sp. nov. (Lauraceae). This is an important improvement in the fossil record of Cryptocarya showing that this genus was widely ranged across southern China in the middle Miocene. The occurrence of the fossil woods of such termophyllous genus as Cryptocarya in the Dajie Formation suggests that this middle Miocene climate in southern Yunnan was frostless. This result is consistent with other evidence for the warm environment caused by complex topographic structures in this region since the middle Miocene linked to the successive uplift of the Tibetan Plateau and the Ailao Mountains. Particularly, it suggests that the Ailao Mountains in the middle Miocene were high enough to weaken the influence of the Asian Winter Monsoon on the territory of Yunnan.

查看原文本刊更多论文

中国西南中新世的隐翅木化石

研究了中国云南省宁洱县大街地层中新世沉积中的月桂木化石的结构。宽（> 7列）射线的出现、鳞片状穿孔板的存在、射线中的油脂/粘液细胞、轴实质和纤维中的油脂/粘液细胞以及其他一些特征使我们能够将该化石木材归属于现生的隐翅木属。我们将这些木材描述为新种 C. latiradiata R. Zhang, T. Su & A. A. Oskolski sp.这是对隐翅虫化石记录的重要改进，表明该属植物在中新世中期广泛分布于中国南方。中新世中期云南南部气候无霜，在大街地层中出现隐翅木这样的端叶属植物化石表明了这一点。这一结果与中新世中期以来该地区复杂的地形结构所造成的温暖环境的其他证据相一致，这些复杂的地形结构与青藏高原和隘老山的相继隆升有关。特别是，它表明中新世中期的隘老山高度足以削弱亚洲冬季季风对云南境内的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Review of Palaeobotany and Palynology 地学-古生物学

CiteScore

3.50

自引率

21.10%

发文量

149

审稿时长

6 months

期刊介绍： The Review of Palaeobotany and Palynology is an international journal for articles in all fields of palaeobotany and palynology dealing with all groups, ranging from marine palynomorphs to higher land plants. Original contributions and comprehensive review papers should appeal to an international audience. Typical topics include but are not restricted to systematics, evolution, palaeobiology, palaeoecology, biostratigraphy, biochronology, palaeoclimatology, paleogeography, taphonomy, palaeoenvironmental reconstructions, vegetation history, and practical applications of palaeobotany and palynology, e.g. in coal and petroleum geology and archaeology. The journal especially encourages the publication of articles in which palaeobotany and palynology are applied for solving fundamental geological and biological problems as well as innovative and interdisciplinary approaches.