2007/01/01 by Guillermo D’Elía, Ulyses F. J. Pardiñas, Pablo Teta +1 · 6 citations
Earth and Planetary Sciences · Environmental Science · #Evolution and Paleontology Studies #Animal Ecology and Behavior Studies #Species Distribution and Climate Change
paper · pdf · doi:10.4067/s0717-65382007000200007
openalex publication_date 2007/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/19
A new tribe of sigmodontine rodents is formally defined and diagnosed. The tribe contains the extant genera Abrothrix (including Chroeomys), Chelemys, Geoxus, Pearsonomys, and Notiomys, a group of taxa distributed in the central and southern Andes and lowlands both east and west of the cordillera. The new tribe presents a unique combination of characters including nasals and premaxilla usually projected anterior to the incisors, moderately trumpeted; zygomatic plate with upper free border reduced or obsolete; and third upper molar reduced and sub-cylindrical in out-line with an internal ring-like enamel fossette. Molecular phylogenetic analyses indicate that Abrothrix is sister to a clade containing the remaining genera of the new tribe.