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| | Amphibian Species of the World - Melanophryniscus Gallardo, 1961 (Site not responding. Last check: 2007-09-17) |
 | | Soc., 119: 297-338), considered Melanophryniscus to be most closely related to Dendrophryniscus. |
 | | Montevideo, 11: 1-11, supplied a key to the Melanophryniscus tumifrons group. |
 | | Céspedez and Alvarez, 2000 "1999", FACENA, 15: 57-67, provided a key to the species of the Melanophryniscus stelzneri group. |
| research.amnh.org /herpetology/amphibia/references.php?g_id=114 (256 words) |
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