Collier, G.E. (2016): The Rivulus of Guatemala: Rivulus tenuis Meek, 1904, Rivulus godmani Regan, 1907 and Rivulus degreefi sp. nov.
- Rivulus degreefi Collier, 2016 = Cynodonichthys degreefi (Collier, 2016)
Journal of the American Killifish Association, 49(2): 34-47.