Darin A. Croft is Associate Professor of Anatomy at Case Western Reserve University and a research associate at several museums, including the Cleveland Museum of Natural History. He is an authority on the extinct mammals of South America and has active field programs in the Andes of Chile and Bolivia.

Velizar Simeonovski is an artist based in Chicago who specializes in life reconstructions of extinct species and visualizations of ancient landscapes. His works have been featured in scientific journals and magazines, in the book Extinct Madagascar: Picturing the Island's Past, and in museum exhibits in the US and in his home country of Bulgaria.