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Morphological variation suggests that chitinozoans may be fossils of individual microorganisms rather than metazoan eggs
Liang, Yan1,3,4; Bernardo, Joseph5,6,7,8; Goldman, Daniel9; Nolvak, Jaak3; Tang, Peng2,4; Wang, Wenhui10; Hints, Olle3
2019-07-31
Source PublicationPROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
ISSN0962-8452
Volume286Issue:1908Pages:8
AbstractChitinozoans are organic-walled microfossils widely recorded in Ordovician to Devonian (ca 485-359 Mya) marine sediments and extensively used in high-resolution biostratigraphy. Their biological affinity remains unknown, but most commonly, they are interpreted as eggs of marine metazoans. Here, we provide new insights into their palaeobiology from three lines of inquiry. We examine morphological variation of a new, well-preserved Late Ordovician species, Hercochitina violana; analyse a compiled dataset of measurements on 378 species representing all known chitinozoan genera; and compare these data with the size variation of eggs of both extinct and extant aquatic invertebrates. The results indicate that the magnitude of site variation within chitinotoan species is larger than observed in fossil and modern eggs. .additionally delicate morphological structures of chitinozoans, such as prosome and complex ornamentation, are inconsistent with the egg hypothesis. Distinct and continuous morphological variation in H. violana is more plausibly interpreted as an ontogenetic series of individual microorganisms, rather than as eggs.
Keywordmorphology palaeozoic organic-walled microfossils chitinozoans biologic affinity
DOI10.1098/rspb.2019.1270
Language英语
WOS KeywordORDOVICIAN ; BIODIVERSIFICATION ; SIZE
Funding ProjectNational Natural Science Foundation of China[41602010] ; National Natural Science Foundation of China[41772001] ; Estonian Research Council[MOBJD62] ; Estonian Research Council[PUT611] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000]
WOS Research AreaLife Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS SubjectBiology ; Ecology ; Evolutionary Biology
WOS IDWOS:000482187500017
Funding OrganizationNational Natural Science Foundation of China ; Estonian Research Council ; Strategic Priority Research Program of Chinese Academy of Sciences
PublisherROYAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/27950
Collection中国科学院南京地质古生物研究所
Corresponding AuthorLiang, Yan; Hints, Olle
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, CAS Key Lab Econ Stratig & Palaeogeog, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
3.Tallinn Univ Technol, Dept Geol, EE-19086 Tallinn, Estonia
4.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China
5.Texas A&M Univ, Marine Biol Interdisciplinary Program, College Stn, TX 77843 USA
6.Texas A&M Univ, Program Ecol & Evolut, College Stn, TX 77843 USA
7.Texas A&M Univ, Lab Evolutionary Ecol & Climate Change, College Stn, TX 77843 USA
8.Texas A&M Univ, Dept Biol, College Stn, TX 77843 USA
9.Univ Dayton, Dept Geol, Dayton, OH 45469 USA
10.Cent S Univ, Sch Geosci & Info Phys, Minist Educ, Key Lab Metallogen Predict Nonferrous Met & Geol, Changsha 410083, Hunan, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Liang, Yan,Bernardo, Joseph,Goldman, Daniel,et al. Morphological variation suggests that chitinozoans may be fossils of individual microorganisms rather than metazoan eggs[J]. PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2019,286(1908):8.
APA Liang, Yan.,Bernardo, Joseph.,Goldman, Daniel.,Nolvak, Jaak.,Tang, Peng.,...&Hints, Olle.(2019).Morphological variation suggests that chitinozoans may be fossils of individual microorganisms rather than metazoan eggs.PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,286(1908),8.
MLA Liang, Yan,et al."Morphological variation suggests that chitinozoans may be fossils of individual microorganisms rather than metazoan eggs".PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 286.1908(2019):8.
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