Echimyidae Gray, 1825
Trinomys albispinus (I. Geoffroy Saint-Hilaire, 1838)
Trinomys dimidiatus (Günther, 1877)
Trinomys eliasi (Pessôa & Reis, 1993)
Trinomys gratiosus (Moojen, 1948)
Trinomys iheringi (Thomas, 1911)
Trinomys mirapitanga Lara, Patton & Hingst-Zaher, 2002
Trinomys moojeni (Pessôa, Oliveira & Reis, 1992)
Trinomys myosuros (Lichtenstein, 1820)
Trinomys paratus (Moojen, 1948)
Trinomys setosus (Desmarest, 1817)
Trinomys yonenagae Rocha, 1995