Stem Parrots (Aves, Halcyornithidae) from the Green River Formation and a Combined Phylogeny of Pan-Psittaciformes
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| Description | scholarly article by Daniel T. Ksepka et al published September 2011 in Journal of Paleontology |
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author: Julia Clarke Daniel T. Ksepka |
| Publication date | September 2011 |
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