High plant diversity in Eocene South America: evidence from PatagoniaDOI: info:10.1126/science.1080475v. 300No. 5616American Association for the Advancement of Science122–125
Wilf, Peter, Cúneo, N. Rubén, Johnson, Kirk R., Hicks, Jason F., Wing, Scott L., and Obradovich, John D. 2003. "High plant diversity in Eocene South America: evidence from Patagonia." Science, 300, (5616) 122–125. https://doi.org/10.1126/science.1080475.