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Huangshanlong, new Middle Jurassic sauropod from Anhui Province, China (free pdf)

Ben Creisler

A new sauropod dinosaur in the new issue (54:4) of Vertebrata PalAsiatica:

HUANG Jian-Dong, YOU Hai-Lu, YANG Jing-Tao & REN Xin-Xin (2014)
A new sauropod dinosaur from the Middle Jurassic of Huangshan, Anhui Province.
Vertebrata PalAsiatica 54(4): 390-400

[NOTE: download of free pdf may be slow.]

A new sauropod dinosaur, Huangshanlong anhuiensis gen. et sp. nov. is
described based on specimens including right humerus, radius, and ulna
from the Middle Jurassic Hongqin Formation of Shexian, Huangshan,
Anhui Province. Comparative studies show that Huangshanlong can be
assigned to Mamenchisauridae. Members of Mamenchisauridae, including
Huangshanlong, have 25° outward torsion of the distal end of the
humerus, well-developed two accessory processes on the cranial edge of
the distal end of the humerus, and well-developed two cranial
processes on the proximal end of the ulna which forms an angle of 900
or slightly less. Compared to other members of Mamenchisauridae,
Huangshanlong possesses a unique combination of features, such as
transverse length of the proximal end of the humerus is 36% of the
total length of the humerus, accessory processes are located near the
middle of the cranial edge of the distal end of the humerus, length of
the radius is 58% of that of the humerus, length of the ulna is two
thirds of that of the humerus, craniomedial process on the proximal
end of the ulna is longer than the craniolateral one, and ridges
develop on the cranial, caudomedial, and caudolateral faces of the
distal portion of the ulna. Huangshanlong represents the first
Jurassic as well as the second dinosaur species in Anhui Province.