Bird-like anatomy, posture, and behavior revealed by an Early Jurassic theropod dinosaur resting trace
A. R. C. Milner,
J. D. Harris,
M. G. Lockley,
J. I. Kirkland, and
N. A. Matthews
2009
Article
PLoS One
4(3):e4591:1
Find it at:
http://dx.doi.org/10.1371/journal.pone.0004591