A mid-Cretaceous tree fern of Thyrsopteridaceae (Cyatheales) preserved in Myanmar amber

被引：11

作者：

Li, Chunxiang ^{[1
,2
]}

Moran, Robbin C. ^{[3
]}

Ma, Junye ^{[1
,2
]}

Wang, Bo ^{[1
,2
]}

Hao, Jiasheng ^{[4
]}

Yang, Qun ^{[1
,2
,5
]}

机构：

[1] Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China

[2] Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China

[3] New York Bot Garden, Bronx, NY 10458 USA

[4] Anhui Normal Univ, Coll Life Sci, Wuhu 241000, Peoples R China

[5] Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China

来源：

CRETACEOUS RESEARCH | 2020年 / 105卷

关键词：

Myanmar amber; Fossil; Tree fern; Thyrsopteris cretacea; BURMESE AMBER; SP NOV; CRETACEOUS AMBER; GEN; POLYPODIALES; FOSSILS;

D O I：

10.1016/j.cretres.2019.01.002

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

An unusual tree fern trapped in mid-Cretaceous Myanmar amber is described as Thyrsopteris cretacea sp. nov. (Thyrsopteridaceae). The fossil most resembles T. elegans, a present-day species endemic to the Juan Fernandez Islands, based on the character combination of pinnate fertile lamina segments with short lobes bearing terminal son, cyathiform indusia, clavate receptacles, and oblique annuli. Thyrsopteris cretacea is the first described mid-Cretaceous tree fern preserved in amber. It adds to the diversity previously ascribed to the Thyrsopteridaceae, which has been based on Eocene fossils, and it extends the fossil record of the family further back to the mid-Cretaceous. Most previous fossils of Thyrsopteridaceae have been from the Southern Hemisphere and are therefore considered Gondwanan. Thyrsopteris cretacea represents one of the few occurrences of the family in Laurasia. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：6

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