Karl, H.-V., Lindow, B. E. K., & Tütken, T. (2012). Miocene Leatherback Turtle Material of the Genus «Psephophorus» (Testudines: Dermochelyoidea) From the Gram Formation (Denmark). Studia Palaeocheloniologica Salmanticensia, 9, 205–216. Retrieved from https://revistas.usal.es/historico/index.php/Palaeocheloniologica/article/view/9227