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Echimys
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Echimys
Temporal range: Pleistocene to Recent
Echimys chrysurus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Echimyidae
Subfamily: Echimyinae
Tribe: Echimyini
Genus: Echimys
F. Cuvier, 1809[1]
Type species
Myoxus chrysurus
Species

Echimys chrysurus
Echimys saturnus
Echimys vieirai

Synonyms

Echinomys Wagner, 1840[2]
Loncheres Illiger, 1811
Nelomys Jourdan, 1837

Echimys is a genus of the spiny rats family, the Echimyidae.[1][3] Members of this genus are collectively called spiny tree-rats.

The genus name Echimys, and also its synonym Echinomys,[2] derive from the two Ancient Greek words ἐχῖνος (ekhînos), meaning "hedgehog", and μῦς (mûs), meaning "mouse, rat".[4][5]

Classification

[edit]

The genus contains three extant species

Members of the genera Callistomys, Makalata, Pattonomys, and Phyllomys were all formerly considered part of the genus Echimys.

Phylogeny

[edit]

Echimys is the sister genus to Phyllomys, and then to Makalata. These taxa are closely related to the genera Pattonomys and Toromys. In turn, these five genera share phylogenetic affinities with a clade containing the bamboo rats Dactylomys, Olallamys, Kannabateomys together with Diplomys and Santamartamys.[6]

Genus-level cladogram of the Echimyini.
Echimyini 
         

  Isothrix

  "Eumysopines"  
         
         
         
         

  Pattonomys

  Toromys
  (Giant tree-rat)

         

  Makalata

The cladogram has been reconstructed from mitochondrial and nuclear DNA characters.[7][8][9][10][11][12][13][14][6]

References

[edit]
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