Cohen BL, Peck LS, Curry GB, Gawthrop AB, Ansell AD, Rhodes MC. Part H, Brachiopoda (Revised), vol. 1, ch. 2, p. 189–242. InvertebratePaleo [Internet]. 1997 Jan. 1 [cited 2024 Nov. 21];. Available from: https://journals.ku.edu/InvertebratePaleo/article/view/5554