Wesselingh , F. P., T. Meijer, R. Harting, M. Bakker, and F. S. Busschers. “New Marine Warm-Temperate Molluscan Assemblage Demonstrates Warm Conditions During the Middle Pleistocene of the North Sea Basin”. Netherlands Journal of Geosciences, Feb. 2023, doi:10.1017/njg.2023.1.