Bibliography

Schaeffer, B. 1949. Anurans from the early Tertiary of Patagonia. Bulletin of the American Museum of Natural History 93: 41–68 (Available at http://digitallibrary.amnh.org/bitstream/handle/2246/404//v2/dspace/ingest/pdfSource/bul/B093a02.pdf?sequence=1&isAllowed=y).