Project 4634: B. J. Shockey, E. White, F. Anaya, A. McGrath. 2022. A new proterotheriid (Mammalia, Litopterna) from the Salla Beds of Bolivia (upper Oligocene): phylogeny and litoptern patellar pit knee locks. Journal of Vertebrate Paleontology. 42 (2):1-15.
