Locomotory and morphological evolution of the earliest Silurian graptolite <i>Demirastrites</i> selected by hydrodynamics

doi:10.1111/pala.12716

NIGPAS OpenIR

	*Locomotory and morphological evolution of the earliest Silurian graptolite Demirastrites* selected by hydrodynamics**
	Gao, Shijia 1; Tan, Jingqiang 1; Wang, Wenhui 1,2
	2024-05-01
发表期刊	PALAEONTOLOGY
ISSN	0031-0239
卷号	67 期号:3 页码:16
摘要	Interpretation of the locomotion of biostratigraphically important graptolite taxa is rare, and rendered problematic due to a lack of close modern analogues and soft tissues. In this study, based on well-preserved specimens of the early Silurian low-helical spiral Demirastrites Eisel, we reconstructed three-dimensional Demirastrites models and simulated their locomotion using computational fluid dynamics. Hydrodynamic properties (outer-wall pressure fields and velocity fields) were obtained and used to test the prevailing hypothesis that the Silurian low helical spiral graptolite Demirastrites could rotate in seawater. The Demirastrites models kept rotating at different velocities in the simulation field, which helped to counteract the impact of the water current and achieve stability. During rotation, higher velocity fields could be observed near the thecal apertures, which meant better access to more nutrient particles in the sea water. Our simulation thus confirmed the rotating locomotory pattern of the Silurian low conical graptolite Demirastrites for the purpose of better feeding efficiency and tubarium stability. Moreover, we analysed how the evolution of structural innovations, such as the density and width of thecae and angle of proximal curvature of the tubarium within the recovered geological lineages of Demirastrites, were influenced and selected by hydrodynamics. The results showed that Demirastrites lineages evolved towards increased stability and higher rotation velocity. Our study highlights the importance of hydrodynamic constraints serving as hidden abiotic factors shaping the evolution of planktonic graptolites.
关键词	locomotion functional morphology computational fluid dynamics hydrodynamics zooplankton graptolite
DOI	10.1111/pala.12716
收录类别	SCI
语种	英语
关键词[WOS]	KRILL EUPHAUSIA-SUPERBA ; ORDOVICIAN GRAPTOLITES ; VERTICAL MIGRATION ; BIOSTRATIGRAPHY ; PALEOECOLOGY ; DIVERSITY ; PATTERNS ; LIFE
资助项目	National Natural Science Foundation of China[42342042] ; National Natural Science Foundation of China[U23B20155] ; National Natural Science Foundation of China[41772001] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences)[213120] ; Natural Science Foundation of Hunan Province[2023JJ20063] ; Rise of Ordovician Life: Filling knowledge gaps in the Early Palaeozoic Biodiversification[735]
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001254947200001
项目资助者	National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences) ; Natural Science Foundation of Hunan Province ; Rise of Ordovician Life: Filling knowledge gaps in the Early Palaeozoic Biodiversification
出版者	WILEY
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/43913
专题	中国科学院南京地质古生物研究所
通讯作者	Wang, Wenhui
作者单位	1.Cent South Univ, Sch Geosci & Info Phys, Changsha 410083, Peoples R China 2.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Gao, Shijia,Tan, Jingqiang,Wang, Wenhui. Locomotory and morphological evolution of the earliest Silurian graptolite Demirastrites selected by hydrodynamics[J]. PALAEONTOLOGY,2024,67(3):16.
APA	Gao, Shijia,Tan, Jingqiang,&Wang, Wenhui.(2024).Locomotory and morphological evolution of the earliest Silurian graptolite Demirastrites selected by hydrodynamics.PALAEONTOLOGY,67(3),16.
MLA	Gao, Shijia,et al."Locomotory and morphological evolution of the earliest Silurian graptolite Demirastrites selected by hydrodynamics".PALAEONTOLOGY 67.3(2024):16.