reevaluationandphylogeneticanalysisofwulagasaurusdongiahadrosaurinedinosaurfromthemaastrichtianofnortheastchina

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	reevaluationandphylogeneticanalysisofwulagasaurusdongiahadrosaurinedinosaurfromthemaastrichtianofnortheastchina
	Xing Hai 1; PrietoMarquez Albert 2; Gu Wei 3; Yu Tingxiang 3
	2012
发表期刊	古脊椎动物学报
ISSN	1000-3118
卷号	50 期号:2 页码:160
摘要	The diagnosis of the hadrosaurine Wulagasaurus dongi is revised in this paper,based on both original and new material recovered from the Upper Cretaceous Yuliangzi Formation at the Wulaga locality in Heilongjiang Province,China.However,we also demonstrate that some specimens previously referred to W.dongi,including braincases,maxillae and scapulae,actually belong to typical lambeosaurines.Wulagasaurus shares strong morphological similarities with the North American taxa Brachylophosaurus and Maiasaura:a long,wedge-shaped rostral apex positioned at the level of the dorsoventral midpoint of the jugal rostral ramus;a fan-shaped caudal ramus of the jugal with a nearly straight or slightly convex caudal margin;a relatively elongate and slender ventral process of the coracoid;a weakly developed humeral deltopectoral crest that is moderately expanded craniolaterally;and an asymmetrical,strongly convex margin of the iliac supracetabular process,lacking a strong ridge connecting its caudal portion with the dorsal margin of the postacetabular process.Phylogenetic analysis indicates that Wulagasaurus,Brachylophosaurus and Maiasaura form a monophyletic basal clade of hadrosaurines.This basal clade originated in Asia during the Santonian age of the Late Cretaceous.No later than the middle Campanian,the lineage split and then dispersed via the Bering land bridge to North America,where Brachylophosaurus and Maiasaura diverged from one another.
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/12140
专题	中国科学院古脊椎动物与古人类研究所
作者单位	1.中国科学院古脊椎动物与古人类研究所 2.Division of Paleontology,American Museum of Natural History 3.Geological Museum of Heilongjiang Province
第一作者单位	中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	Xing Hai,PrietoMarquez Albert,Gu Wei,et al. reevaluationandphylogeneticanalysisofwulagasaurusdongiahadrosaurinedinosaurfromthemaastrichtianofnortheastchina[J]. 古脊椎动物学报,2012,50(2):160.
APA	Xing Hai,PrietoMarquez Albert,Gu Wei,&Yu Tingxiang.(2012).reevaluationandphylogeneticanalysisofwulagasaurusdongiahadrosaurinedinosaurfromthemaastrichtianofnortheastchina.古脊椎动物学报,50(2),160.
MLA	Xing Hai,et al."reevaluationandphylogeneticanalysisofwulagasaurusdongiahadrosaurinedinosaurfromthemaastrichtianofnortheastchina".古脊椎动物学报 50.2(2012):160.