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New parvicursorine alvarezsauroid specimen from Inner Mongolia, China (free pdf)



Ben Creisler
bcreisler@gmail.com

A new paper with an  unnamed new dinosaur:

Michael Pittman, Xing Xu & Josef B. Stiegler (2015)
The taxonomy of a new parvicursorine alvarezsauroid specimen IVPP
V20341 (Dinosauria: Theropoda) from the Upper Cretaceous Wulansuhai
Formation of Bayan Mandahu, Inner Mongolia, China.
PeerJ 3:e986
https://dx.doi.org/10.7717/peerj.986
https://peerj.com/articles/986/



A new parvicursorine alvarezsauroid theropod specimen IVPP V20341 from
the Upper Cretaceous Wulansuhai Formation of Bayan Mandahu, Inner
Mongolia, China is described. IVPP V20341 appears to be
distinguishable amongst alvarezsauroids by possible cervical procoely
and relatively larger semi-circular caudal neural canals, but these
features are not proposed as autapomorphies because current knowledge
of alvarezsauroid necks and tails remains sparse. IVPP V20341 is
distinguishable from Linhenykus—the sole parvicursorine at Bayan
Mandahu—by the location of the origination points of the anterior
caudal transverse processes; in IVPP V20341 this is the anterodorsal
corner of the centra, whereas in Linhenykus it is the posterior end of
the prezygapophyses. A number of additional tentative differences
between IVPP V20341 and Linhenykus are also identified, but cannot be
confirmed until further details of anatomical variation along the neck
and tail are revealed by future finds. Thus, following the study of
IVPP V20341 there are still seven parvicursorine species from the
Upper Cretaceous Gobi Basin, but future finds could increase this to
eight species.

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