Helwerda, Enate A. “Conidae and Terebridae (Gastropoda: Neogastropoda) from the Plio-Pleistocene of the Philippines”. Zootaxa 4221, no. 5 (January 20, 2017): 545–561. Accessed March 8, 2026. https://www.mapress.com/zt/article/view/zootaxa.4221.5.4.