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Gannansaurus, new titanosauriform sauropod from Late Cretaceous of China



From: Ben Creisler
bcreisler@gmail.com

A new paper (the pdf download does not appear to work for this link):



Lü Junchang,  YI Laiping,  ZHONG Hui &  WEI Xuefang (2013)
A New Somphospondylan Sauropod (Dinosauria, Titanosauriformes) from
the Late Cretaceous of Ganzhou, Jiangxi Province of Southern China.
Acta Geologica Sinica (English Edition),87(3):678-685
http://www.geojournals.cn/dzxben/ch/reader/view_abstract.aspx?file_no=201303005&flag=1


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.