West RR, Vacelet J, Hartman WD, Wood RA. Part E, Porifera (Revised), vol. 4 & 5, ch. 4, p. 209–292. InvertebratePaleo [Internet]. 2015 Jan. 1 [cited 2024 Nov. 21];. Available from: https://journals.ku.edu/InvertebratePaleo/article/view/5755