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

Taohelong, first polacanthine ankylosaur from Asia (Early Cretaceous, China) (free pdf)



From: Ben Creisler
bcreisler@gmail.com


A paper in Chinese in the new issue of Vertebrata PalAsiatica:

http://english.ivpp.cas.cn/sp/PalAsiatica/vp_list/201301/t20130131_98741.html

Pdfs are free at links.

==

YANG Jing-Tao, YOU Hai-Lu, LI Da-Qing & KONG De-Lai (2013)
First discovery of polacanthine ankylosaur dinosaur in Asia.
Vertebrata PalAsiatica 51(4): 265-277
1000-3118(2013)04-0265-13
http://www.ivpp.cas.cn/cbw/gjzdwxb/xbwzxz/201312/P020131205318740255664.pdf



A new dinosaur, Taohelong jinchengensis gen. et. sp. nov., is
described based on material (a proximo-middle caudal vertebra, three
dorsal ribs, an almost compelete left ilium, and several armors
including a partial sacral shield) from the Lower Cretaceous Hekou
Group in Lanzhou-Minhe Basin, north-central China. Taohelong
jinchengensis possesses three autapomorphies: neural canal of
proximo-middle caudal inverted trapezium, lateral edge of
preacetabular process inverted "S"-shaped in dorsal view, and sacral
shield composed of various-sized and irregularly-arranged osteoderms.
Cladistic analysis shows that Taohelong is a member of polacanthine
nodosaurid ankylosaur, and is the sister taxon of Polacanthus foxii
from the Early Cretaceous Barremian of England. Here Polacenthinae is
defined as the most inclusive clade containing Polacanthus foxii Owen,
1865 but not Ankylosaurus magniventris Brown, 1908 or Panoplosaurus
mirus Lambe, 1919. Taohelong represents the first occurrence of
polacanthine in Asia, and indicates again the existence of a rich and
unique dinosaur assemblage in the Lower Cretaceous Hekou Group in the
Lanzhou-Minhe Basin.