@article{O_Connor_2012,
title={Homology and Potential Cellular and Molecular Mechanisms for the Development of Unique Feather Morphologies in Early Birds},
volume={2},
ISSN={2076-3263},
url={http://dx.doi.org/10.3390/geosciences2030157},
DOI={10.3390/geosciences2030157},
number={3},
journal={Geosciences},
publisher={MDPI AG},
author={O’Connor,
Jingmai K. and Chiappe,
Luis M. and Chuong,
Cheng-ming and Bottjer,
David J. and You,
Hailu},
year={2012},
month=sep,
pages={157–177} }