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LI Ruiyun,WANG Xuelian,JIN Peihong,MA Fujun,YAN Defei,LIN Zhicheng,SUN Bainian.2016.Fossil Liverworts from the Lower Cretaceous Huolinhe Formation in Inner Mongolia, China[J].Acta Geologica Sinica(),90(3):838-846
Fossil Liverworts from the Lower Cretaceous Huolinhe Formation in Inner Mongolia, China    Download PDF
LI Ruiyun  WANG Xuelian  JIN Peihong  MA Fujun  YAN Defei  LIN Zhicheng  SUN Bainian
The authors thank Dr. Sanping Xie, Dr. Jingyu Wu and Dr. Baoxia Du (Lanzhou University, China) for their helpful suggestion, and Prof. Pengcheng Wu and Prof. Meizhi Wang (Institute of Botany, Chinese Academy of Sciences, China) for providing the extant specimens and helpful discussion. This work is supported by the National Basic Research Program of China (973 Program) (no. 2012CB822003), the Funds of Key Laboratory of Economic Stratigraphy and Palaeogeography, Nanjing Institute of Geology and Palaeontology, CAS (No. Y421140303), Specialized Research Fund for the Doctoral Program of Higher Education (Grant 20120211110022), the Fundamental Research Funds for the Central Universities (Grant lzujbky-2015-201), and the National Natural Science Foundation of China (Grants 41172022, 41272026 and 41202001).
DOI:
Abstract:
      A new genus and species, Rebouliothallus huolinhensis sp. nov., and two uncertain species, Ricciopsis sp. and Hepaticites sp., are described. The fossils were collected from the Lower Cretaceous Huolinhe Formation of Huolinhe Basin, northeastern China. The new genus Rebouliothallus was established in the Aytoniaceae family of Marchantiales. Rebouliothallus huolinhensis appears to be quite similar to species of the extant genus Reboulia Raddi. The species is characterized by the relatively large ventral scales. Ventral scales are large, imbricate and arranged in two rows on the ventral surface. Rhizoids are either pegged or smooth. Ricciopsis sp. is characterized by the rosette-forming thallus. Hepaticites sp. shows some similarities to liverworts. Of the forty-nine Early Cretaceous floras of China, only two floras, one from the Huolinhe basin, Inner Mongolia and the other from the Jixi Basin, Heilongjiang Province, contain fossil liverworts. The rare fossil liverwort records in the Early Cretaceous floras of China may be the result of taphonomic bias.
Key words:Rebouliothallus, Ricciopsis, Hepaticites, Early Cretaceous, Huolinhe Formation
Fossil Liverworts from the Lower Cretaceous Huolinhe Formation in Inner Mongolia, China    Download Fulltext
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