Multi-isotopic analysis reveals the early stem turtle <i>Odontochelys</i> as a nearshore herbivorous forager

doi:10.3389/fevo.2023.1175128

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	*Multi-isotopic analysis reveals the early stem turtle Odontochelys* as a nearshore herbivorous forager**
	Goedert, Jean 1; Amiot, Romain 2; Anquetin, Jeremy 3,4; Seon, Nicolas 1; Bourgeais, Renaud 5; Bailly, Gilles 6; Fourel, Francois 7; Simon, Laurent 7; Li, Chun8 ; Wang, Wei 8; Lecuyer, Christophe 2
	2023-08-17
发表期刊	FRONTIERS IN ECOLOGY AND EVOLUTION
ISSN	2296-701X
卷号	11 期号:0 页码:13
摘要	Introduction: After decades of debate on the origin of turtles, it is now widely accepted that they are diapsid reptiles originating in the Permian from a terrestrial ancestor. It seems that the initial development of the structures that will later form the unique turtle bony shell took place as a response to a fossorial lifestyle. However, the earliest stem turtle with a fully complete plastron, Odontochelys semitestacea from the Late Triassic (lower Carnian) of China, is somewhat controversially interpreted as an aquatic or even a marine form, raising the question of the environment in which the completion of the plastron happened. Methods: Here, we analyzed the stable carbon, oxygen and sulfur isotope compositions (delta C-13, delta O-18 and delta S-34) of bones from two specimens of Odontochelys along with bones and teeth of two associated specimens of the marine ichthyosaur Guizhouichthyosaurus tangae. Results and discussion: We first show that delta O-18 values of Odontochelys are incompatible with a terrestrial lifestyle and imply a semi-aquatic to aquatic lifestyle. Isotopic results also demonstrate that the aquatic environment of Odontochelys was submitted to a strong marine influence, therefore excluding the possibility of a strict freshwater aquatic environment. Additionally, an unusual carbon isotope composition shows that O. semitestacea was herbivorous, probably consuming macrophytic algae in coastal zones like the extant green sea turtle (Chelonia mydas) or the marine iguana (Amblyrhynchus cristatus) do.
关键词	Triassic sulfur oxygen carbon geochemistry paleoecology vertebrate
DOI	10.3389/fevo.2023.1175128
关键词[WOS]	DECOMPRESSION SYNDROME ; EVOLUTIONARY ORIGIN ; MARINE IGUANA ; DIAGENESIS ; PHOSPHATE ; FOSSIL ; CARBONATE ; SULFUR ; RATIOS ; ENAMEL
收录类别	SCI
语种	英语
资助项目	JA was funded by a grant from the Swiss National Science Foundation (SNF 205321_175978). ; Swiss National Science Foundation ; [SNF 205321_175978]
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001059233700001
出版者	FRONTIERS MEDIA SA
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22606
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Goedert, Jean
作者单位	1.Sorbonne Univ, Ctr Rech Paleontol Paris CR2P, Museum Natl Hist Nat, MNHN,CNRS, Paris, France 2.Univ Claude Bernard Lyon 1, Univ Lyon, LGL TPE, UJM,CNRS,ENSL, Villeurbanne, France 3.JURASSICA Museum, Porrentruy, Switzerland 4.Univ Fribourg, Dept Geosci, Fribourg, Switzerland 5.Univ PSL, Ecole Prat Hautes Etud, Les Patios St Jacques, Paris, France 6.Musee Angouleme, Angouleme, France 7.Univ Claude Bernard Lyon 1, Univ Lyon, CNRS, ENTPE,UMR 5023,LEHNA, Villeurbanne, France 8.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Goedert, Jean,Amiot, Romain,Anquetin, Jeremy,et al. Multi-isotopic analysis reveals the early stem turtle Odontochelys as a nearshore herbivorous forager[J]. FRONTIERS IN ECOLOGY AND EVOLUTION,2023,11(0):13.
APA	Goedert, Jean.,Amiot, Romain.,Anquetin, Jeremy.,Seon, Nicolas.,Bourgeais, Renaud.,...&Lecuyer, Christophe.(2023).Multi-isotopic analysis reveals the early stem turtle Odontochelys as a nearshore herbivorous forager.FRONTIERS IN ECOLOGY AND EVOLUTION,11(0),13.
MLA	Goedert, Jean,et al."Multi-isotopic analysis reveals the early stem turtle Odontochelys as a nearshore herbivorous forager".FRONTIERS IN ECOLOGY AND EVOLUTION 11.0(2023):13.

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