[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Nankangia, new oviraptorosaur from Late Cretaceous of China

From: Ben Creisler

New in PLoS ONE:

Junchang Lü,  Laiping Yi,  Hui Zhong & Xuefang Wei (2013)
A New Oviraptorosaur (Dinosauria: Oviraptorosauria) from the Late
Cretaceous of Southern China and Its Paleoecological Implications.
PLoS ONE 8(11): e80557.

A new oviraptorosaur Nankangia jiangxiensis gen. et sp. nov. is
described on the basis of a partial postcranial skeleton with a
partial lower jaw collected from the Upper Cretaceous Nanxiong
Formation of Ganzhou, in Jiangxi Province of southern China. The new
taxon is diagnosed by: (1) a mandibular symphysis that is not turned
down; (2) neural spines of the cranial caudal vertebrae that are wider
transversely than anteroposteriorly, forming a large posterior fossa
with rugose central areas; (3) a femoral neck extending at an angle of
about 90 to the shaft; and (4) a ratio of femur to tibia length of
0.95. Phylogenetic analysis recovers Nankangia as basal to the
oviraptorid Yulong, but more derived than Caenagnathus, which also has
a mandibular symphysis that is not turned down. The coexistence of
Nankangia jiangxiensis, Ganzhousaurus nankangensis, Jiangxisaurus
ganzhouensis, an unnamed oviraptorid from Nanxiong Basin and Banji
long suggests that they occupied distinct ecological niches. Nankangia
may have been more herbivorous than carnivorous.