Template:Xu et al., 2009
- Xu, X., Clark, J.M., Mo, J., Choiniere, J., Forster, C.A., Erickson, G.M., Hone, D.W.E., Sullivan, C., Eberth, D.A., Nesbitt, S., Zhao, Q., Hernandez, R., Jia, C.-K., Han, F.-L. & Guo, Y. 2009. A Jurassic ceratosaur from China helps clarify avian digital homologies. Nature 459(18): 940–944. DOI: 10.1038/nature08124