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- Title
New Fossil Liverworts from the Lower Cretaceous of Western Liaoning, China.
- Authors
GUO, Caiqing; YAO, Jianxin; ZHANG, Jianwei; WU, Pengcheng; LI, Chengsen
- Abstract
Sixteen liverwort specimens collected from the Lower Cretaceous Yixian Formation of Huangbanjigou Village, Liaoning Province, China are studied in this work. The plants are thalloid and preserved in brown arenaceous mudstone as impressions. Based on examinations, the liverworts are assigned to two new genera and five new species: Riccardiothallus palmata sp. nov., Pallaviciniites stricta sp. nov., Pellites latithallus gen. et sp. nov., Conocephalumites hexagonites gen. et sp. nov. and Metzgerites multifidus sp. nov., belonging to five families and five genera. The fossil research indicates that the divergence of families, Aneuraceae and Metzgeriaceae, Pallaviciniaceae and Hymenophytaceae, Pelliaceae and Fossombroniaceae, was in the Lower Cretaceous (125 Ma). The research provides significant additions to the fossil liverwort records in Western Liaoning and offers fossil evidence for studying the classification and evolution of extant liverworts.
- Subjects
LIVERWORTS; ANEURACEAE; METZGERIACEAE; BIOLOGICAL evolution; VOLCANIC eruptions
- Publication
Acta Geologica Sinica (English Edition), 2017, Vol 91, Issue 5, p1542
- ISSN
1000-9515
- Publication type
Article
- DOI
10.1111/1755-6724.13399