A New Somphospondylan Sauropod (Dinosauria, Titanosauriformes) from the Late Cretaceous of Ganzhou, Jiangxi Province of Southern China

被引：19
作者：
Lu Junchang [1 ]
Yi Laiping [2 ]
Zhong Hui [2 ]
Wei Xuefang [1 ]
机构：
[1] Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
[2] Ganzhou Museum Nat Hist, Ganzhou 341000, Jiangxi, Peoples R China
来源：
ACTA GEOLOGICA SINICA-ENGLISH EDITION | 2013年 / 87卷 / 03期
关键词：
Ganzhou; Jiangxi Province; Late Cretaceous; Gannansaurus; Somphospondyli; Titanosauriformes; REDESCRIPTION; REASSESSMENT; PHYLOGENY; EVOLUTION;
D O I：
10.1111/1755-6724.12079
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
A new somphospondylan sauropod (Dinosauria, Titanosauriformes): Gannansaurus sinensis gen. et sp. nov. from the Late Cretaceous Nanxiong Formation of Ganzhou Basin, Jiangxi Province of southern China is erected based on one nearly complete dorsal vertebra and a mid-caudal vertebra. It is characterized by two centroprezygapophyseal lamina fossae; large, square-shaped concavity formed by centroprezygapophyseal lamina and dorsal margin of the centrum; large infraparapophyseal fossa; three openings present within the large lateral concavity, which occupy 65% length of the centrum; the posterior centroparapophyseal lamina (PCPL) and the anterior centroparapophyseal lamina (ACPL) weakly developed; the posterior centrodiapophyseal lamina (PCDL) separated by an infradiapophyseal fossa into two branches dorsally; parapophyseal and diapophyseal laminae cross to form "K" configuration. It shares some characters with the Early Cretaceous form-Euhelopus, indicating that it is more closely related to Euhelopus rather than to other titanosauriform sauropods. This means Gannansaurus may have a close phylogenetic relationship with Euhelopus.
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页码：678 / 685
页数：8
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