Coates, M.I. & Tietjen, K. & Johanson, Z. & Friedman, M. & Sang, S. (2021)
The cranium of Helodus simplex (Agassiz, 1838) revised.
In: Ancient Fishes and their Living Relatives: a Tribute to John G. Maisey. Alan Pradel, John S. S. Denton & Philippe Janvier (eds.): pp. 193-204, Verlag Dr. Friedrich Pfeil, München, Germany
