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Phylogenetic implications of Eshanosaurus
If Eshanosaurus is really a therizinosaur, it would complicate the therizinosaur cladogram because it is older than Falcarius, the first therizinosaur of the Cretaceous period. The placement of Eshanosaurus within Therizinosauria follows Kirland et. al. (2005) and Xu et. al. (2002).
Kirkland, J. I., Zanno, L. E., Sampson, S. D., Clark, J. M. & DeBlieux, D. D., 2005: A primitive therizinosauroid dinosaurs from the Early Cretaceous of Utah. –Nature: Vol. 435, pp. 84-87
Xu X., Zhang X.-H., Sereno, P., Zhao, X-J., Kuang, Xu.-W., Han, J.& Tan, L., 2002: A new therizionosauroid (Dinosauria, Theropoda) from the Upper Cretaceous Iren Dabau Formation of Nei Mongol. –Vertebrate Palasiatica: Vol.40, #3, pp. 228-240
- To be honest, I haven't got a clue on whether Eshanosaurus is prosauropod or therizinosaur. I personally lean towards prosauropod (the idea of an Early Jurassic therizinosaur just seems...weird), but a lot of paleontologists want to go the other way. In summary: the debate continues. I hope this will be resolved soon, it gives me headaches... —Preceding unsigned comment added by Crimsonraptor (talk • contribs) 22:28, 2 September 2010 (UTC)