NIGPAS OpenIR
Absolute axial growth and trunk segmentation in the early Cambrian trilobite Oryctocarella duyunensis
Dai, Tao1; Hughes, Nigel C.2,3; Zhang, Xingliang(张兴亮)1,4; Fusco, Giuseppe5
2021-08-01
Source PublicationPALEOBIOLOGY
ISSN0094-8373
Volume47Issue:3Pages:517-532
Abstract

A short stratigraphic interval near Bulin in western Hunan (China) yields multiple specimens of the similar to 514-Myr-old oryctocarine trilobite Oryctocarella duyunensis. Size data obtained from these specimens indicate that, from meraspid degree 1 onward, degrees represent successive instars. Meraspid growth persisted until a terminal stage was reached, providing the first example of determinate growth in trilobites and, notably, in an early Cambrian species. The sample contains three varieties of such terminal stages, recognized as holaspids, with 9, 10, or 11 thoracic segments, respectively. During the meraspid phase, growth rates were not constant in this species. The pattern of growth seen in the Bulin assemblage differs modestly from that reported in the same species from two other localities, attesting to microevolutionary variation in developmental patterns among these collections.

DOI10.1017/pab.2020.63
Indexed BySCI
Language英语
WOS KeywordSIZE-FREQUENCY DISTRIBUTIONS ; DUYUNASPIS-DUYUNENSIS ; SERIES 2 ; STAGE 4 ; ARTHROPOD ; EVOLUTION ; CORYNEXOCHIDA ; ONTOGENY
Funding ProjectNatural Science Foundation of China[41621003] ; Natural Science Foundation of China[41890840] ; Natural Science Foundation of China[41890844] ; 111 Project[D17013] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; U.S. National Science Foundation[EAR-1849963] ; Fulbright Academic and Professional Excellence Award 2019 at the Indian Statistical Institute, Kolkata[APE-R/107]
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology ; Evolutionary Biology ; Paleontology
WOS SubjectBiodiversity Conservation ; Ecology ; Evolutionary Biology ; Paleontology
WOS IDWOS:000678167200011
Funding OrganizationNatural Science Foundation of China ; 111 Project ; Strategic Priority Research Program of Chinese Academy of Sciences ; U.S. National Science Foundation ; Fulbright Academic and Professional Excellence Award 2019 at the Indian Statistical Institute, Kolkata
PublisherCAMBRIDGE UNIV PRESS
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/38439
Collection中国科学院南京地质古生物研究所
Corresponding AuthorHughes, Nigel C.
Affiliation1.Northwest Univ, State Key Lab Continental Dynam, Shaanxi Key Lab Early Life & Environm, Xian 710069, Peoples R China
2.Univ Calif Riverside, Dept Earth & Planetary Sci, Riverside, CA 92521 USA
3.Indian Stat Inst, Geol Studies Unit, 203 BT Rd, Kolkata 700108, India
4.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, Nanjing 210008, Peoples R China
5.Univ Padua, Dept Biol, Via U Bassi 58-B, I-35131 Padua, Italy
Recommended Citation
GB/T 7714
Dai, Tao,Hughes, Nigel C.,Zhang, Xingliang,et al. Absolute axial growth and trunk segmentation in the early Cambrian trilobite Oryctocarella duyunensis[J]. PALEOBIOLOGY,2021,47(3):517-532.
APA Dai, Tao,Hughes, Nigel C.,Zhang, Xingliang,&Fusco, Giuseppe.(2021).Absolute axial growth and trunk segmentation in the early Cambrian trilobite Oryctocarella duyunensis.PALEOBIOLOGY,47(3),517-532.
MLA Dai, Tao,et al."Absolute axial growth and trunk segmentation in the early Cambrian trilobite Oryctocarella duyunensis".PALEOBIOLOGY 47.3(2021):517-532.
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