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1.- Early Cretaceous fish trails from La Rioja, Spain Elsevier;; GBR; United Kingdom, 2009 Ver registro
2.- Were non-avian theropod dinosaurs able to swim? Supportive evidence from an Early Cretaceous trackway, Cameros Basin (La Rioja, Spain) Geological Society of America (GSA); Boulder, CO; USA; United States, 2007 Ver registro
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