Español: Figura 12. Reconstrucciones de los ambientes donde habitaban los hadrosaurios de América del Norte durante el Cretácico. A, reconstrucción de un ambiente frío de la Fm. Dinosaur Park, en Alberta Canadá con dos Parasaurolophus walkeri.
English: Figure 12. Reconstructions of the environments where North American hadrosaurs lived during the Cretaceous. A, reconstruction of a cold environment of the Dinosaur Park Formation, in Alberta Canada with two Parasaurolophus walkeri.
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