The Recently Extinct Plants and Animals Database


Megaoryzomys curioi Niethammer, 1964

Galapágos giant rat



Santa Cruz, Galapágos Islands
Last Record
Late Quaternary
IUCN status
TSE Forum thread
VCCDRS 54866
VCCDRS 55281

For full details, see: and
[b]Original Scientific Description:[/b]

Niethammer, J. (1964). Contribution a la connaissance des mammiferes terrestres de l'ile Indefatigable (=Santa Cruz), Galapagos. Résultats de l'expedition Allemagne aux Galapagos 1962/63. Mammalia, 28:593-606.

[b]Species Bibliography:[/b]

Alcover, Josep Antoni et al. (1998). [url=]Mammal Species of the World: Additional Data on Insular Mammals[/url]. American Museum Novitates 3248, 29 pp., 1 table.

Hutterer, Rainer and Oromi, P. (1993). La rata gigante de la Isla Santa Cruz, Galapagos: Algunos datos y problemas. Resultados Cientificos del Proyecto Galapagos, Patrimonio de la Humanidad, Museo de Ciencias Naturales, Tenerife 4: 63-76.

Ronez, Christophe et al. (2020). Tribal allocation and biogeographical significance of one of the largest sigmodontine rodent, the extinct Galápagos Megaoryzomys (Cricetidae). Historical Biology. [Abstract]


Steadman, David W. and Ray, C. E. (1982). The Relationships of Megaoryzomys curioi, an Extinct Cricetine Rodent (Muroidea: Muridae) from the Galapagos Islands, Ecuador. Smithsonian Contributions to Paleobiology, 51: 23 pages, 11 figures. (available online, 7.2MB file:

Weksler, M. & Tirira, D. (2008). Megaoryzomys curioi. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.1. ( Downloaded on 12 September 2011.

Wilson, D.E. & Reeder, D.M. 2005 Mammal species of the world: a taxonomic and geographic reference. Third edition. Baltimore, MD: John Hopkins University Press.