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Vélez-Juarbe, J.; Martin, T.; Macphee, R. D. E.; Ortega-Ariza, D. (January 2014). "The earliest Caribbean rodents: Oligocene caviomorphs from Puerto Rico". Journal of Vertebrate Paleontology. 34 (1): 157–163. doi:10.1080/02724634.2013.789039. S2CID140178414.