Gomphothere mandible originally described (Shotwell and Russell 1963) as *Platybelodon* from Black Butte fauna, Juntura formation, Malheur county, OR. Recently described as the new species, *Eurybelodon shoshanii* (Lambert 2016). Specimen is in the collection of the University of Orgeon, Museum of Nature and Culture, Eugene, OR.
Lambert, W. D. (2016). Eurybelodon shoshanii, an unusual new shovel-tusked gomphothere (Mammalia, Proboscidea) from the late Miocene of Oregon. Journal of Vertebrate Paleontology, 36(3), e1091352.
Shotwell, A., & Russell, D. E. (1963). Mammalian fauna of the Upper Juntura Formation, the Black Butte local fauna. Transactions of the American Philosophical Society, 53, 42-69.