Testing for a dietary shift in the Early Cretaceous ceratopsian dinosaur Psittacosaurus lujiatunensis

doi:10.1111/pala.12529

IVPP-IR > 中科院古脊椎所（2000年以后）

	Testing for a dietary shift in the Early Cretaceous ceratopsian dinosaur Psittacosaurus lujiatunensis
	Landi, Damiano 1; King, Logan 1; Zhao, Qi 1,2; Rayfield, Emily J.1; Benton, Michael J.1; Porro, Laura 1
	2021-03-21
发表期刊	PALAEONTOLOGY
ISSN	0031-0239
页码	14
通讯作者	King, Logan(logan.king@bristol.ac.uk)
摘要	Many dinosaurs may have shown ecological differentiation between hatchlings and adults, possibly because of the great size differential. The basal ceratopsian Psittacosaurus lujiatunensis is known from thousands of specimens from the Lower Cretaceous of China and these include many so-called 'juvenile clusters.' During the early stages of ontogeny, P. lujiatunensis underwent a posture shift from quadrupedal to bipedal, and a dietary shift has also been postulated. In this study, we made a 2D mechanical analysis of the jaws of a hatchling and an adult to determine the differences between the two systems; we found some differences, but these were only modest. The adult was better suited to feeding on tough plant material than the hatchling, based on its higher values of absolute and relative bite forces and higher values of mechanical advantage, but there were no substantial shifts in jaw shape or function.
关键词	jaw mechanics lever system diet dietary shift ceratopsian Cretaceous
DOI	10.1111/pala.12529
收录类别	SCI
语种	英语
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000630959700001
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/311034/18635
专题	中科院古脊椎所（2000年以后）
通讯作者	King, Logan
作者单位	1.Univ Bristol, Sch Earth Sci, Queens Rd, Bristol BS8 1RJ, Avon, England 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, POB 643, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Landi, Damiano,King, Logan,Zhao, Qi,et al. Testing for a dietary shift in the Early Cretaceous ceratopsian dinosaur Psittacosaurus lujiatunensis[J]. PALAEONTOLOGY,2021:14.
APA	Landi, Damiano,King, Logan,Zhao, Qi,Rayfield, Emily J.,Benton, Michael J.,&Porro, Laura.(2021).Testing for a dietary shift in the Early Cretaceous ceratopsian dinosaur Psittacosaurus lujiatunensis.PALAEONTOLOGY,14.
MLA	Landi, Damiano,et al."Testing for a dietary shift in the Early Cretaceous ceratopsian dinosaur Psittacosaurus lujiatunensis".PALAEONTOLOGY (2021):14.