West RR. Treatise Online, no. 20, Part E, Revised, Volume 4, Chapter 2A: Introduction to the fossil hypercalcified chaetetid-type Porifera (Demospongiae). TREON [Internet]. 2011 Jan. 25 [cited 2024 Apr. 27];. Available from: https://journals.ku.edu/treatiseonline/article/view/4137