Richard A. Fariña is professor of paleontology at the Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay. He has also published science books for a general readership and collaborated in TV documentaries on the subjects of his expertise.
Sergio F. Vizcaino is professor of vertebrate zoology at the Universidad Nacional de La Plata and researcher of the Consejo Nacional de Investigaciones Cientificas y Tecnicas working at the Museo de La Plata, Argentina. His research focuses on the paleobiology of South American fossil vertebrates, mostly mammals.
Gerry De Iuliis is affiliated with the Department of Ecology and Evolutionary Biology at the University of Toronto.
Gary Tiedemann is a Florida and New York-based narrator, but learned how to act in Chicago's improv, sketch-comedy, and theater scene. He came to audiobook narration after voicing countless commercials and videos over a twenty-year voice-over career.