“Molluscan Faunas and Biostratigraphy of the Marine Younger Miocene Formations in Denmark. Part I: Geology and Biostratigraphy”. Danmarks Geologiske Undersøgelse II. Række 88 (December 31, 1966): 1–358. Accessed October 19, 2025. https://geusjournals.org/index.php/raekke2/article/view/6879.