Moore, R. C., P. C. Sylvester-Bradley, S. A. Levinson, R. V. Kesling, I. G. Sohn, H. W. Scott, Richard H. Benson, John Wainwright, and H. V. Howe. “Part Q, Arthropoda 3, Ch. 1, P. 1-99”. Treatise on Invertebrate Paleontology (January 1, 1961). Accessed July 22, 2024. https://journals.ku.edu/InvertebratePaleo/article/view/5619.