Webby, Barry D., Colin W. Stearn, and Heldur Nestor. “Treatise Online, No. 32: Part E, Revised, Volume 4, Chapter 12: Biostratigraphy of the Paleozoic Stromatoporoidea”. Treatise Online (February 1, 2012). Accessed July 16, 2024. https://journals.ku.edu/treatiseonline/article/view/4254.