Hoffmann, René, and Michael K. Howarth. “Takahashiceras – A New Generic Name Proposed for Takahashia Matsumoto, 1984”. Paleontological Contributions, no. 15 (November 19, 2015): 1. Accessed May 2, 2024. https://journals.ku.edu/paleocontributions/article/view/20302.