NIGPAS OpenIR
Brachial supporting structure of Spiriferida (Brachiopoda)
Yuan, Zhiwei1; Guo, Wen(郭文)2,3; Lyu, Dan4,5; Sun, Yuanlin1
2021-05-01
Source PublicationJOURNAL OF PALEONTOLOGY
ISSN0022-3360
Volume95Issue:3Pages:553-567
Abstract

The filter-feeding organ of some extinct brachiopods is supported by a skeletal apparatus called the brachidium. Although relatively well studied in Atrypida and Athyridida, the brachidial morphology is usually neglected in Spiriferida. To investigate the variations of brachidial morphology in Spiriferida, 65 species belonging to eight superfamilies were analyzed. Based on the presence/absence of the jugal processes and normal/modified primary lamellae of the spiralia, four types of brachidium are recognized. Type-I (with jugal processes) and Type-II (without jugal processes), both having normal primary lamellae, could give rise to each other by losing/re-evolving the jugal processes. Type-III, without jugal processes, originated from Type-II through evolution of the modified lateral-convex primary lamellae, and it subsequently gave rise to Type-IV by evolving the modified medial-convex primary lamellae. The evolution of brachidia within individual evolutionary lineages must be clarified because two or more types can be present within a single family. Type-III and Type-IV are closely associated with the prolongation of the crura, representing innovative modifications of the feeding apparatus in response to possible shift in the position of the mouth towards the anterior, allowing for more efficient feeding on particles entering the mantle cavity from the anterior gape. Meanwhile, the modified primary lamellae adjusted/regulated the feeding currents. The absence of spires in some taxa with Type-IV brachidium might suggest that they developed a similar lophophore to that in some extant brachiopods, which can extend out of the shell.

DOI10.1017/jpa.2020.106
Indexed BySCI
Language英语
WOS KeywordLATE ORDOVICIAN ; MISSISSIPPIAN BRACHIOPODS ; EVOLUTION ; LOPHOPHORE ; MORPHOLOGY ; GENERA ; CHINA ; GENUS
Funding ProjectNational Natural Science Foundation of China (NSFC)[41772015]
WOS Research AreaPaleontology
WOS SubjectPaleontology
WOS IDWOS:000641079200006
Funding OrganizationNational Natural Science Foundation of China (NSFC)
PublisherCAMBRIDGE UNIV PRESS
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/38130
Collection中国科学院南京地质古生物研究所
Corresponding AuthorSun, Yuanlin
Affiliation1.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Peoples R China
4.PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
5.China Natl Petr Corp, Key Lab Oil & Gas Reservoir, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Yuan, Zhiwei,Guo, Wen,Lyu, Dan,et al. Brachial supporting structure of Spiriferida (Brachiopoda)[J]. JOURNAL OF PALEONTOLOGY,2021,95(3):553-567.
APA Yuan, Zhiwei,Guo, Wen,Lyu, Dan,&Sun, Yuanlin.(2021).Brachial supporting structure of Spiriferida (Brachiopoda).JOURNAL OF PALEONTOLOGY,95(3),553-567.
MLA Yuan, Zhiwei,et al."Brachial supporting structure of Spiriferida (Brachiopoda)".JOURNAL OF PALEONTOLOGY 95.3(2021):553-567.
Files in This Item:
File Name/Size DocType Version Access License
brachial-supporting-(1637KB)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
[Yuan, Zhiwei]'s Articles
[Guo, Wen(郭文)]'s Articles
[Lyu, Dan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yuan, Zhiwei]'s Articles
[Guo, Wen(郭文)]'s Articles
[Lyu, Dan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yuan, Zhiwei]'s Articles
[Guo, Wen(郭文)]'s Articles
[Lyu, Dan]'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.