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Hyoliths with pedicles illuminate the origin of the brachiopod body plan
Sun, Haijing (孙海静)1,2; Smith, Martin R.3; Zeng, Han (曾晗)1,2,4,5; Zhao, Fangchen (赵方臣)1,2; Li, Guoxiang (李国祥)1,2; Zhu, Maoyan (朱茂炎)1,2,4
2018-09-26
Source PublicationPROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
ISSN0962-8452
Volume285Issue:1887Pages:7
Abstract

Hyoliths are a taxonomically problematic group of Palaeozoic lophotrochozo-ans that are among the first shelly fossils to appear in the Cambrian period. On the basis of their distinctive exoskeleton, hyoliths have historically been classified as a separate phylum with possible affinities to the molluscs, sipunculans or lophophorates-but their precise phylogenetic position remains uncertain. Here, we describe a new orthothecide hyolith from the Chengjiang Lagerstatte (Cambrian Series 2 Stage 3), Pedunculotheca diania Sun, Zhao et Zhu gen. et sp. nov., which exhibits a non-mineralized attachment structure that strikingly resembles the brachiopod pedicle-the first report of a peduncular organ in hyoliths. This organ establishes a sessile, suspension feeding ecology for these orthothecides and-together with other characteristics (e.g. bilaterally symmetrical bivalve shell enclosing a filtration chamber and the differentiation of cardinal areas)-identifies hyoliths as stem-group brachiopods. Our phylogenetic analysis indicates that both hyoliths and crown brachiopods derived from a tommotiid grade, and that the pedicle has a single origin within the brachiopod total group.

KeywordPedicle Orthothecide Hyoliths Phylogeny Stem Brachiopod Chengjiang Lagerstatte Cambrian
DOI10.1098/rspb.2018.1780
Language英语
WOS KeywordShale-type Preservation ; Stem-group ; Northwestern Canada ; Shelled Brachiopods ; South-australia ; Evolution ; Microstructures ; Lagerstatte ; Mineralogy ; Phylogeny
Funding ProjectChinese Academy of Sciences[XDB18000000] ; National Natural Science Foundation of China[41602002] ; National Natural Science Foundation of China[41472012] ; NSFC-RCUK_NERC[41661134048]
WOS Research AreaLife Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS SubjectBiology ; Ecology ; Evolutionary Biology
WOS IDWOS:000445695400013
Funding OrganizationChinese Academy of Sciences ; National Natural Science Foundation of China ; NSFC-RCUK_NERC
PublisherROYAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/16910
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorSmith, Martin R.; Zhao, Fangchen (赵方臣)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Durham, Dept Earth Sci, Mountjoy Site, South Rd, Durham DH1 3LE, England
4.Univ Chinese Acad Sci, Coll Earth Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
5.Natl Museum Nat Hist, Dept Paleobiol, POB 37012,MRC-121, Washington, DC 20013 USA
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Sun, Haijing ,Smith, Martin R.,Zeng, Han ,et al. Hyoliths with pedicles illuminate the origin of the brachiopod body plan[J]. PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2018,285(1887):7.
APA Sun, Haijing ,Smith, Martin R.,Zeng, Han ,Zhao, Fangchen ,Li, Guoxiang ,&Zhu, Maoyan .(2018).Hyoliths with pedicles illuminate the origin of the brachiopod body plan.PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,285(1887),7.
MLA Sun, Haijing ,et al."Hyoliths with pedicles illuminate the origin of the brachiopod body plan".PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 285.1887(2018):7.
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