Harrington HJ, Weller JM, Howell BF, Whittington HB, Sdzuy K, Schmidt H, et al. Part O, Arthropoda 1, ch. 4, p. 363-526. InvertebratePaleo [Internet]. 1959 Jan. 1 [cited 2024 Apr. 27];. Available from: https://journals.ku.edu/InvertebratePaleo/article/view/5607