Harrington HJ, Weller JM, Howell BF, Whittington HB, Sdzuy K, Schmidt H, et al. Part O, Arthropoda 1, ch. 1, p. 1-126. InvertebratePaleo [Internet]. 1959 Jan. 1 [cited 2024 Nov. 3];. Available from: https://journals.ku.edu/InvertebratePaleo/article/view/5604