Chiropodomys karlkoopmani Musser 1979
Chiropodomys karlkoopmani Musser 1979, Bull. Am. Mus . Nat. Hist., 162 (6): 389.
Type Locality: Indonesia, Kepulauan Mentawai, Pulau Pagai Utara.
Vernacular Names: Koopman's Pencil-tailed Tree Mouse.
Distribution: Known only from Pagai (Musser, 1979), and Siberut (Jenkins and Hill, 1982) in the Mentawai Isls.
Conservation: IUCN – Endangered.
Discussion: The largest in body size of any described Chiropodomys, and possibly most closely related to C. major . Part of the rodent fauna endemic to the Mentawai Arch. (see account of Leopoldomys siporanus).