[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Zuolong, new basal coelurosaur from China
From: Ben Creisler
In case this paper has not been mentioned yet:
Jonah N. Choiniere; James M. Clark; Catherine A. Forster;
Xing Xu , 2010.
A basal coelurosaur (Dinosauria: Theropoda) from the Late
Jurassic (Oxfordian) of the Shishugou Formation in
Wucaiwan, People's Republic of China.
Journal of Vertebrate Paleontology 30(6):1773 - 1796
We describe a new coelurosaurian theropod, Zuolong
salleei, gen. et sp. nov., from exposures of the upper
part of the Shishugou Formation at the Wucaiwan locality,
Xinjiang Autonomous Region, People's Republic of China.
Zuolong has a large, inclined quadrate foramen that
extends onto the medial surface of the quadratojugal, an
unusually large fovea capitis on the femoral head, and an
apomorphically large distal condyle of metatarsal III
with a medially projecting flange on the extensor
surface. Radiometric dating of the Shishugou Formation
constrains the age of the specimen to the beginning of
the Late Jurassic (Oxfordian). A cladistic analysis of
Zuolong salleei in a broadly sampled theropod data matrix
recovers it as a basal coelurosaur. These data make
Zuolong one of the oldest coelurosaur fossils yet known
that preserves both cranial and postcranial bones.