Uninterrupted growth in a non-polar hadrosaur explains the gigantism among duck-billed dinosaurs

doi:10.1111/pala.12473

IVPP-IR > 中科院古脊椎所（2000年以后）

	Uninterrupted growth in a non-polar hadrosaur explains the gigantism among duck-billed dinosaurs
	Slowiak, Justyna 1; Szczygielski, Tomasz 1; Ginter, Michal 2; Fostowicz-Frelik, Lucja 1,3
	2020-01-30
发表期刊	PALAEONTOLOGY
ISSN	0031-0239
页码	21
通讯作者	Szczygielski, Tomasz(t.szczygielski@twarda.pan.pl)
摘要	Duck-billed dinosaurs (Hadrosauridae) were the most common ornithopods of the Late Cretaceous. Second only to sauropods and in many cases exceeding the sizes of the largest land mammals (such as indricotheres or proboscideans), they are among the largest terrestrial herbivores to have walked the Earth. Despite their gigantic size, diversity and abundance, their growth strategies remain poorly understood. Here, we examine the bone microstructure of several Mongolian hadrosauroids of varied adult sizes. The small and middle-sized species have lines of arrested growth (LAGs). On the other hand, one of the largest duck-billed dinosaurs, Saurolophus angustirostris, shows uninterrupted growth, comparable with other big hadrosaurs for which the lack of cyclical growth arrests was interpreted as a result of living in the polar region. Since both of the studied taxa inhabited warmer, continental, monsoon-influenced environments of the Late Cretaceous Mongolia, we propose that the absence of LAGs is not a climatic-driven condition but rather connected with the animal's size (i.e. ontogeny). Our results show that, like sauropods, hadrosaurs changed their growth dynamics from cyclical to continuous during their evolution, which made it possible for them to achieve comparable body sizes.
关键词	bone growth dynamics gigantism hadrosaur histology dinosaur
DOI	10.1111/pala.12473
关键词[WOS]	LONG-BONE HISTOLOGY ; ASIAN ORNITHOPODS DINOSAURIA ; PHYLOGENETIC INFERENCE ; ARRESTED GROWTH ; TELL US ; ORNITHISCHIA ; AGE ; EVOLUTION ; DYNAMICS ; TURTLES
收录类别	SCI
语种	英语
资助项目	Willi Henning Society
项目资助者	Willi Henning Society
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000510160200001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/17078
专题	中科院古脊椎所（2000年以后）
通讯作者	Szczygielski, Tomasz
作者单位	1.Polish Acad Sci, Inst Paleobiol, Dept Evolutionary Paleobiol, Twarda 51-55, PL-00818 Warsaw, Poland 2.Univ Warsaw, Fac Geol, Zwirki & Wigury 93, PL-02089 Warsaw, Poland 3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, 142 Xizhimenwai St, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Slowiak, Justyna,Szczygielski, Tomasz,Ginter, Michal,et al. Uninterrupted growth in a non-polar hadrosaur explains the gigantism among duck-billed dinosaurs[J]. PALAEONTOLOGY,2020:21.
APA	Slowiak, Justyna,Szczygielski, Tomasz,Ginter, Michal,&Fostowicz-Frelik, Lucja.(2020).Uninterrupted growth in a non-polar hadrosaur explains the gigantism among duck-billed dinosaurs.PALAEONTOLOGY,21.
MLA	Slowiak, Justyna,et al."Uninterrupted growth in a non-polar hadrosaur explains the gigantism among duck-billed dinosaurs".PALAEONTOLOGY (2020):21.