NIGPAS OpenIR
The Proterozoic macrofossil Tawuia as a coenocytic eukaryote and a possible macroalga
Tang, Qing1,2,3; Pang, Ke(庞科)4,5,6; Li, Guangjin(李光金)4,5,7; Chen, Lei7; Yuan, Xunlai(袁训来)4,5,6,9; Sharma, Mukund8; Xiao, Shuhai2,3
2021-08-15
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume576Pages:15
Abstract

Proterozoic carbonaceous macrofossils are key to understand the evolution of early eukaryotes and how they acquired macroscopic sizes. However, phylogenetic interpretation of these macrofossils is challenging because most of them are morphologically simple and lack phylogenetically diagnostic features. Among Proterozoic carbonaceous macmfossils, the tomaculate fossil Tawuia is relatively rich in characters and is common in Proterozoic successions. However, its phylogenetic interpretation is uncertain and Tawuia has been variously interpreted as a bacterium or an alga (photosynthetic eukaryote), in part because certain aspects of its morphologies have not been consistently documented, hampering their functional interpretations. Here we report exceptionally preserved Tawuia specimens from the Tonian Liulaobei and Shiwangzhuang formations in North China. These fossils show that Tawuia is a tomaculate organism, sometimes with an axial stripe, terminal discoidal structures, and transverse constrictions, features that were previously documented but variously interpreted. We infer that Tawuia was a coenocytic organism with recalcitrant cell walls, asexual reproduction through asymmetric constrictions, and possible abscission structures. These features indicate that Tawuia is probably a coenocytic eukaryote, and possibly a macroalga, although more evidence is needed to confirm these interpretations, particularly the photosynthetic nature of Tawuia. A literature review reveals that the key features described here occur not only in many Tonian Tawuia specimens, but also in some possible Mesopmterozoic Tawuia fossils as much as ca. 1.6 Ga old. The new data and interpretations of Tawuia presented here provide important constraints on the origin and early evolution of coenocytic eukaryotes, primary plastids, and macroalgae, particularly if the Mesopmterozoic Tawuia fossils are confirmed as macroalgae.

KeywordProterozoic Carbonaceous macrofossil Tawuia Coenocytic macroalga
DOI10.1016/j.palaeo.2021.110485
Indexed BySCI
Language英语
WOS KeywordORGANIC-WALLED MICROFOSSILS ; NORTH CHINA CRATON ; CARBONACEOUS COMPRESSION FOSSILS ; VINDHYAN SUPERGROUP ; MACKENZIE MOUNTAINS ; CHLOROPHYTA ; ALGA ; PALEOBIOLOGY ; SUCCESSIONS ; MORPHOLOGY
Funding ProjectNASA Exobiology Program[80NSSC18K1086] ; Paleontological Society ; Geological Society of America ; National Natural Science Foundation of China[41921002] ; National Natural Science Foundation of China[41602007] ; Youth Innovation Promotion Association CAS[2021307] ; Science Foundation of Jiangsu Province of China[BK20161090] ; State Key Laboratory of Palaeobiology and Stratigraphy[193126] ; State Key Laboratory of Palaeobiology and Stratigraphy[20201102] ; State Key Laboratory of Palaeobiology and Stratigraphy[20162109]
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000668458200001
Funding OrganizationNASA Exobiology Program ; Paleontological Society ; Geological Society of America ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Science Foundation of Jiangsu Province of China ; State Key Laboratory of Palaeobiology and Stratigraphy
PublisherELSEVIER
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/38463
Collection中国科学院南京地质古生物研究所
Corresponding AuthorTang, Qing; Xiao, Shuhai
Affiliation1.Univ Hong Kong, Dept Earth Sci, Pokfulam Rd, Hong Kong, Peoples R China
2.Virginia Tech, Dept Geosci, Blacksburg, VA 24061 USA
3.Virginia Tech, Global Change Ctr, Blacksburg, VA 24061 USA
4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
7.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China
8.Birbal Sahni Inst Palaeosci, Lucknow 226007, Uttar Pradesh, India
9.Nanjing Univ, Ctr Res & Educ Biol Evolut & Environm, Nanjing 210023, Peoples R China
Recommended Citation
GB/T 7714
Tang, Qing,Pang, Ke,Li, Guangjin,et al. The Proterozoic macrofossil Tawuia as a coenocytic eukaryote and a possible macroalga[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,576:15.
APA Tang, Qing.,Pang, Ke.,Li, Guangjin.,Chen, Lei.,Yuan, Xunlai.,...&Xiao, Shuhai.(2021).The Proterozoic macrofossil Tawuia as a coenocytic eukaryote and a possible macroalga.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,576,15.
MLA Tang, Qing,et al."The Proterozoic macrofossil Tawuia as a coenocytic eukaryote and a possible macroalga".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 576(2021):15.
Files in This Item:
File Name/Size DocType Version Access License
1-s2.0-S003101822100(28997KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Usage statistics
Google Scholar
Similar articles in Google Scholar
[Tang, Qing]'s Articles
[Pang, Ke(庞科)]'s Articles
[Li, Guangjin(李光金)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tang, Qing]'s Articles
[Pang, Ke(庞科)]'s Articles
[Li, Guangjin(李光金)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tang, Qing]'s Articles
[Pang, Ke(庞科)]'s Articles
[Li, Guangjin(李光金)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.