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Temporal range: Eocene
Masillamys Senckenberg 2007-01.JPG
Masillamys at the Senckenberg collection
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Suborder: Sciurognathi
Family: Ischyromyidae
Genus: Masillamys
Tobien, 1954

M. beegeri
M. mattaueri


Masillamys is an extinct genus of rodent. It was named in 1954 by Tobien. It is considered 'sister genera' to the Hartenbergeromys, Lophiparamys, Mattimys, Microparamys, Pantrogna, Sparnacomys, and Strathcona genera.


  • ESCARGUEL G. 1999. Les rongeurs de l'Eocène inférieur et moyen d'Europe Occidentale. Systématique, phylogénie, biochronologie et paléobiogéographie des niveaux-repères MP 7 a MP 14 = The rodents of the early and middle Eocene from Western Europe. Palaeovertebrata 28 (2-4): 89-351. abstract