Developmental dynamics is revealed in the early Cambrian arthropod Chuandianella ovata
Summary: Segmentation and tagmatization have contributed to the preeminent success of arthropods since their first appearance in the Cambrian. However, the exact mechanism of segmentogenesis is still insufficiently known in living and extinct groups. Here, we describe the postembryonic development o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004221015613 |
| _version_ | 1798024775045480448 |
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| author | Cong Liu Dongjing Fu Xingliang Zhang |
| author_facet | Cong Liu Dongjing Fu Xingliang Zhang |
| author_sort | Cong Liu |
| collection | DOAJ |
| description | Summary: Segmentation and tagmatization have contributed to the preeminent success of arthropods since their first appearance in the Cambrian. However, the exact mechanism of segmentogenesis is still insufficiently known in living and extinct groups. Here, we describe the postembryonic development of a Waptiid arthropod Chuandianella ovata from the early Cambrian Chengjiang biota, South China. The new data illuminate a complex dynamic pattern of anamorphosis and epimorphosis, and a three-step process of segmentogenesis, i.e., the elongation of the terminal segment, delineation of an incipient segment, and full separation of a new segment. Compensatory growth is accomplished by rapid growth of new segments and/or generation of additional segments, which results in the trimorphism of the posterior tagma. Such complex developmental dynamics has rarely been known in the arthropod fossil record and its presence in early history helps to understand the rapid diversification of arthropods in the early Cambrian. |
| first_indexed | 2024-04-11T18:08:03Z |
| format | Article |
| id | doaj.art-dc4592d08bbf4855afed0bc9c9702eae |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-04-11T18:08:03Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-dc4592d08bbf4855afed0bc9c9702eae2022-12-22T04:10:17ZengElsevieriScience2589-00422022-01-01251103591Developmental dynamics is revealed in the early Cambrian arthropod Chuandianella ovataCong Liu0Dongjing Fu1Xingliang Zhang2State Key Laboratory of the Continental Dynamics, Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi'an 710069, ChinaState Key Laboratory of the Continental Dynamics, Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi'an 710069, ChinaState Key Laboratory of the Continental Dynamics, Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi'an 710069, China; Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China; Corresponding authorSummary: Segmentation and tagmatization have contributed to the preeminent success of arthropods since their first appearance in the Cambrian. However, the exact mechanism of segmentogenesis is still insufficiently known in living and extinct groups. Here, we describe the postembryonic development of a Waptiid arthropod Chuandianella ovata from the early Cambrian Chengjiang biota, South China. The new data illuminate a complex dynamic pattern of anamorphosis and epimorphosis, and a three-step process of segmentogenesis, i.e., the elongation of the terminal segment, delineation of an incipient segment, and full separation of a new segment. Compensatory growth is accomplished by rapid growth of new segments and/or generation of additional segments, which results in the trimorphism of the posterior tagma. Such complex developmental dynamics has rarely been known in the arthropod fossil record and its presence in early history helps to understand the rapid diversification of arthropods in the early Cambrian.http://www.sciencedirect.com/science/article/pii/S2589004221015613Biological sciencesEvolutionary biologyDevelopmental biology |
| spellingShingle | Cong Liu Dongjing Fu Xingliang Zhang Developmental dynamics is revealed in the early Cambrian arthropod Chuandianella ovata iScience Biological sciences Evolutionary biology Developmental biology |
| title | Developmental dynamics is revealed in the early Cambrian arthropod Chuandianella ovata |
| title_full | Developmental dynamics is revealed in the early Cambrian arthropod Chuandianella ovata |
| title_fullStr | Developmental dynamics is revealed in the early Cambrian arthropod Chuandianella ovata |
| title_full_unstemmed | Developmental dynamics is revealed in the early Cambrian arthropod Chuandianella ovata |
| title_short | Developmental dynamics is revealed in the early Cambrian arthropod Chuandianella ovata |
| title_sort | developmental dynamics is revealed in the early cambrian arthropod chuandianella ovata |
| topic | Biological sciences Evolutionary biology Developmental biology |
| url | http://www.sciencedirect.com/science/article/pii/S2589004221015613 |
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