Stearn, Colin. “Treatise Online, No. 19, Part E, Revised, Volume 4, Chapter 16E: Stromatoporellida, Stromatoporida, Syringostromatida, Amphiporida, and Genera With Uncertain Affinities”. Treatise Online, Jan. 2011, https://doi.org/10.17161/to.v0i0.4092.