| Author: | Günther, 1876. |
| Actual Date: | 1877 |
| Citation: | Proc. Zool. Soc. Lond., 1876: 747. |
| Common Name: | Soft-spined Atlantic Spiny-rat |
| Type Locality: | Brazil, Rio de Janeiro, unknown probably SW Rio de Janeiro. |
| Distribution: | E Brazil including the states of Rio de Janeiro and Distrito Federal. |
| Status: | IUCN – Lower Risk (lc) as Proechimys dimidiatus. |
| Comments: | Reviewed by Pessôa and Reis (1993). Lara and Patton (2000) concluded that dimidiatus was the sister taxon of iheringi. Karyotype has 2n=56 (Pessôa and Reis, 1993). |
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