Furnish, William M., Zhou Zuren, and Brian F. Glenister. “Part L, Mollusca 4 (Revised), Vol. 2, Ch. 4, P. 158-192”. Treatise on Invertebrate Paleontology (January 1, 2009). Accessed November 21, 2024. https://journals.ku.edu/InvertebratePaleo/article/view/5274.