| Fossil evidence of Trachycarpeae (Arecaceae) from the K-Pg of India and its biogeographic implications | |
| Kumar, Sanchita; Spicer, Robert A.; Khan, Mahasin Ali | |
| 2025 | |
| Source Publication | BOTANY LETTERS
 |
| ISSN | 2381-8107 |
| Volume | xIssue:xPages:- |
| Abstract | A well-preserved petrified palm stem from the Upper Maastrichtian (Upper Cretaceous) to Lower Danian (Lower Paleocene) rocks (c. 66-65 Ma) of the Deccan Intertrappean Beds of Madhya Pradesh, Central India, displays a close resemblance to stems of the extant unplaced genus Washingtonia H.Wendl. of Trachycarpeae, the largest tribe within the palm subfamily Coryphoideae. It has a Corypha-type organization, with reniforma, cordata, sagittata-shaped fibrovascular bundles, 2 (3-4) metaxylem vessels with excluded vascular zone position, and the presence of tabular parenchyma. The permineralized stem is described as a new species, Palmoxylon trachycarpeaeense Kumar et Khan sp. nov. This, and earlier reported fossil taxa from the same sedimentary deposit, represents the oldest reliable megafossil record of Trachycarpeae from India and is important from a biogeographic perspective. This fossil palm stem supports a Gondwanan origin of the Trachycarpeae and is important for tracing their migration pathways from India to other continents after the docking of the Indian subcontinent with Eurasia during the early Paleocene, supporting an Out-of-India dispersal hypothesis. |
| Keyword | PALMS SHEDS LIGHT GLOBAL BIOGEOGRAPHY GONDWANAN ORIGIN CORYPHOID PALMS MADHYA-PRADESH STEM ANATOMY DECCAN TRAPS EVOLUTION NORTHERN AGE |
| Subject Area | Plant Sciences |
| DOI | 10.1080/23818107.2025.2502926 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001488713400001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/14790 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Sidho Kanho Birsha Univ, Dept Bot, Palaeobotany & Palynol Lab, Ranchi Rd, Purulia 723104, India 2.Spicer, Robert A.] Chinese Acad Sci, State Key Lab Plant Divers & Specialty Crops, Xishuangbanna Trop Bot Garden, Menglun, Yunnan, Peoples R China 3.Spicer, Robert A.] Open Univ, Sch Environm Earth & Ecosyst Sci, Milton Keynes, England 4.Spicer, Robert A.] Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resources, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Kumar, Sanchita,Spicer, Robert A.,Khan, Mahasin Ali. Fossil evidence of Trachycarpeae (Arecaceae) from the K-Pg of India and its biogeographic implications[J]. BOTANY LETTERS,2025,x(x):-. |
| APA | Kumar, Sanchita,Spicer, Robert A.,&Khan, Mahasin Ali.(2025).Fossil evidence of Trachycarpeae (Arecaceae) from the K-Pg of India and its biogeographic implications.BOTANY LETTERS,x(x),-. |
| MLA | Kumar, Sanchita,et al."Fossil evidence of Trachycarpeae (Arecaceae) from the K-Pg of India and its biogeographic implications".BOTANY LETTERS x.x(2025):-. |
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