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Adaptations to changing substrates in diploblastic dinomischids from the early Cambrian
Zhao, Yang1,2,3,4; Chen, Ai-lin5; Klug, Christian4; Lei, Xiang-tong2,3; Cong, Pei-yun2,3
2024-08-15
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号648页码:12
摘要

The significant changes in seafloor conditions during the Ediacaran-Cambrian transition presumably bear on the autecology of the benthic animals living in this time interval. However, little evidence shows morphological modifications and life strategy transitions in early animals in response to this substrate revolution. Dinomischidae is a family of diploblastic-grade with a sessile, suspension-feeding lifestyle, which includes Xianguangia, Daihua and Dinomischus. Here, we redescribe Calathites spinalis, a poorly known taxon from the early Cambrian (Epoch 2, Age 3, similar to 518 Ma), as a new member of this family. Our new material reveals that the body of C. spinalis consists of a stalked calyx and 18 tentacle-sheath complexes, which is a typical trait of dinomischids. Our phylogenetic analyses recover Calathites as a sister group of Xianguangia and Daihua and support dinomischids being a monophyletic group. Members of dinomischids possess unique attachment structures that vary in shape and size, presenting a unique example of morphological adaptations of early sessile animals during the Cambrian substrate revolution. Comparison with early metazoan fossils reveals that dinomischids and other early basal metazoans lagged behind sessile bilaterians in terms of adaptations to substrate changes; the former tends to persist with attachment strategies adapted to Proterozoic-style seafloor conditions that were relatively firm.

关键词Dinomischidae Phylogeny Attachment strategy Chengjiang biota Cambrian substrate revolution
DOI10.1016/j.palaeo.2024.112301
收录类别SCI
语种英语
关键词[WOS]CHENGJIANG LAGERSTATTE ; BENTHIC INVERTEBRATES ; EARLY EVOLUTION ; SOFT SUBSTRATA ; LIFE-STYLES ; FOSSILS ; PALEOECOLOGY ; SHALE ; BIOTA ; COMMUNITIES
资助项目National Natural Science Foundation of China[42202023] ; National Natural Science Foundation of China[42072019] ; National Natural Science Foundation of China[42262004] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; YNU- Yunnan Government[202201BF070001-016] ; UZH Postdoc Grant[FK-22-129] ; Jiangsu Funding Program for Excellent Postdoctoral Talent[2022ZB457]
WOS研究方向Physical Geography ; Geology ; Paleontology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号WOS:001252016900001
项目资助者National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; YNU- Yunnan Government ; UZH Postdoc Grant ; Jiangsu Funding Program for Excellent Postdoctoral Talent
出版者ELSEVIER
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/43885
专题中国科学院南京地质古生物研究所
通讯作者Chen, Ai-lin; Cong, Pei-yun
作者单位1.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
2.Yunnan Univ, Inst Palaeontol, Yunnan Key Lab Palaeobiol, Kunming 650500, Peoples R China
3.Yunnan Univ, MEC Int Joint Lab Palaeobiol & Palaeoenvironm, Inst Palaeontol, Kunming 650500, Peoples R China
4.Univ Zurich, Palaontol Inst, CH-8006 Zurich, Switzerland
5.Yuxi Normal Univ, Res Ctr Paleobiol, Yuxi 653100, Peoples R China
推荐引用方式
GB/T 7714
Zhao, Yang,Chen, Ai-lin,Klug, Christian,et al. Adaptations to changing substrates in diploblastic dinomischids from the early Cambrian[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2024,648:12.
APA Zhao, Yang,Chen, Ai-lin,Klug, Christian,Lei, Xiang-tong,&Cong, Pei-yun.(2024).Adaptations to changing substrates in diploblastic dinomischids from the early Cambrian.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,648,12.
MLA Zhao, Yang,et al."Adaptations to changing substrates in diploblastic dinomischids from the early Cambrian".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 648(2024):12.
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