1.
Melville RV, Fell HB, Kier PM, Durham JW, Wagner CD, Pawson DL, et al. Part U, Echinodermata 3, vol. 1 & 2, ch. 3, p. 211-366. InvertebratePaleo [Internet]. 1966 Jan. 1 [cited 2024 Dec. 11];. Available from: https://journals.ku.edu/InvertebratePaleo/article/view/5655