''Pattonomys'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

rodent Rodents (from Latin , 'to gnaw') are mammals of the Order (biology), order Rodentia ( ), which are characterized by a single pair of continuously growing incisors in each of the upper and Mandible, lower jaws. About 40% of all mammal specie ...

in the family

Echimyidae Echimyidae is the family of neotropical spiny rats and their fossil relatives. This is the most species-rich family of hystricognath rodents. It is probably also the most ecologically diverse, with members ranging from fully arboreal to terr ...

, named after American mammalogist James L. Patton. It contains the following species: * Bare-tailed armored tree-rat (''

Pattonomys occasius The bare-tailed armored tree-rat (''Pattonomys occasius'') is a species of arboreal rodent in the family Echimyidae. It is found in lowland tropical rainforest east of the Andes in Ecuador and Peru Peru, officially the Republic of Peru, is ...

'') * Speckled spiny tree-rat ('' Pattonomys semivillosus'')

Phylogeny

''Pattonomys'' is the sister genus to ''Toromys''. These taxa are closely related to ''Echimys'', ''Phyllomys'', and ''Makalata'', reflecting the fact that ''

'' and ''

Toromys grandis The giant tree-rat (''Toromys grandis'') is a species in the family Echimyidae, the spiny rats. It is the only species in the monotypic genus ''Toromys''. It is endemic to Brazil, where it occurs in the flooded forest along the banks of the Amaz ...

'' have formerly been placed in ''Makalata'' by some authorities. In turn, these five genera share phylogenetic affinities with a clade containing the bamboo rats ''Dactylomys'', ''Olallamys'', ''Kannabateomys'' together with ''Diplomys'' and ''Santamartamys''.

References

Echimyini Rodent genera Mammals described in 2005 Taxa named by Louise H. Emmons {{Echimyidae-stub