Spiny tree-rats are all found in the
rodent
Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are na ...
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 terres ...
. They are found in the following genera:
* ''
Echimys
''Echimys'' is a genus of the spiny rats family, the Echimyidae. Members of this genus are collectively called spiny tree-rats.
The genus name ''Echimys'', and also its synonym ''Echinomys'', derive from the two Ancient Greek words (), meani ...
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* ''
Lonchothrix
The tuft-tailed spiny tree rat (''Lonchothrix emiliae'') is a spiny rat species from Brazil south of the Amazon River, where it has been found in grassland and gallery forest. It is the only species in the genus ''Lonchothrix''.
Very little is ...
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* ''
Mesomys
''Mesomys'' is a genus of South American spiny rats in the family Echimyidae.
The genus name ''Mesomys'' derives from the two ancient greek words (), meaning "middle of, between", and (), meaning "mouse, rat". It refers to the fact that this ...
''
* ''
Makalata''
* ''
Pattonomys
''Pattonomys'' is a genus of rodent in the family Echimyidae, named after American mammalogist James L. Patton.
It contains the following species:
* Bare-tailed armored tree-rat (''Pattonomys occasius'')
* Speckled spiny tree-rat (''Pattonomys s ...
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