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Fossil evidence of avian crops from the Early Cretaceous of China.
Zheng X, Martin LD, Zhou Z, Burnham DA, Zhang F, Miao D. Zheng X, et al. Among authors: zhou z. Proc Natl Acad Sci U S A. 2011 Sep 20;108(38):15904-7. doi: 10.1073/pnas.1112694108. Epub 2011 Sep 6. Proc Natl Acad Sci U S A. 2011. PMID: 21896733 Free PMC article.
Hind wings in Basal birds and the evolution of leg feathers.
Zheng X, Zhou Z, Wang X, Zhang F, Zhang X, Wang Y, Wei G, Wang S, Xu X. Zheng X, et al. Among authors: zhou z. Science. 2013 Mar 15;339(6125):1309-12. doi: 10.1126/science.1228753. Science. 2013. PMID: 23493711
Zheng et al. reply.
O'Connor J, Zheng X, Zhou Z. O'Connor J, et al. Among authors: zhou z. Nature. 2013 Jul 11;499(7457):E1-2. doi: 10.1038/nature12368. Nature. 2013. PMID: 23846662 No abstract available.
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