Marchantites huolinhensis sp. nov. (Marchantiales) - A new fossil liverwort with gemma cups from the Lower Cretaceous of Inner Mongolia, China

被引：17
|
作者：
Li, Ruiyun [1 ,2 ]
Sun, Bainian [1 ,2 ]
Wang, Hongshan [3 ]
He, Yuli [1 ,2 ]
Yang, Guolin [1 ,2 ]
Yan, Defei [1 ,2 ]
Lin, Zhicheng [1 ,2 ,4 ]
机构：
[1] Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China
[2] Lanzhou Univ, Key Lab Mineral Resources Western China Gansu Pro, Lanzhou 730000, Gansu, Peoples R China
[3] Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32511 USA
[4] Chongqing Univ Sci & Technol, Sch Petr Engn, Chongqing 401331, Peoples R China
来源：
CRETACEOUS RESEARCH | 2014年 / 50卷
基金：
中国国家自然科学基金;
关键词：
Marchantites; Gemma cup; Ventral scale; Liverwort; The Early Cretaceous; Huolinhe Formation; EARLIEST LAND PLANTS; THALLOID ORGANISM; CLIMATE-CHANGE; BRYOPHYTES; PHYLOGENY; MITOCHONDRIAL; MICROFOSSILS; CHLOROPLAST; TEMPERATURE; ANTARCTICA;
D O I：
10.1016/j.cretres.2014.03.007
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
A new fossil liverwort species Marchantites huolinhensis R.Y. Li & B.N. Sun sp. nov., is founded based on twenty-seven fossil specimens collected from the Lower Cretaceous Huolinhe Formation in Huolinhe Basin of Inner Mongolia, China. The fossil liverwort is characterized by thalloid and prostrate gametophyte, and elliptical circular gemma cups. Thallus is strap-like, dichotomously branched and with prominent costa. Imbricate ventral scales are in two rows and smooth and unicellular rhizoids are produced in considerable numbers around the costa. Cells on prominent costa are elongated and parallel to the long axis of the thallus. The relatively complete gametophyte, gemma cups, ventral scales and rhizoids indicate that they were likely to be autochthonously buried in dysoxic or anoxic silty deposits. Marchantites huolinhensis, along with other fossil records from other localities and age, indicates that the Marchantiales was already diverse in the Early Cretaceous and its morphological evolution is very slow. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：16 / 26
页数：11
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