The Recently Extinct Plants and Animals Database

Megaoryzomys curioi Niethammer, 1964

Galapágos giant rat



Taxonomy & Nomenclature



Conservation Status

Last record: Late Quaternary

IUCN RedList status: Extinct



Santa Cruz, Galapágos Islands


Biology & Ecology




VCCDRS 54866
VCCDRS 55281

For full details, see: and






Original scientific description:

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.


Other references:

Alcover, Josep Antoni et al. (1998). Mammal Species of the World: Additional Data on Insular Mammals. 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.

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.


<< Back to the Rodents database