Shotwell, J. Arnold2016-08-012016-08-011967-1100786047https://hdl.handle.net/1794/2000360 pagesThe geomyoid rodents of the late Tertiary of Oregon are described and their relationships discussed. Most of the material involved is new. A new genus, Parapliosaccomys, is recognized and three new species, Parapliosaccomys oregonensis, Adjidaumo quartzi, and Pseudotheridomys pagei.en-USCreative Commons BY-NC-ND 4.0-USGeomyoidTertiaryParapliosaccomysParapliosaccomys oregonensisAdjidaumo quartziPseudotheridomys pageiArticle