«Ctenochelys stenoporus» (Hay, 1905) (Testudines: Toxochelyidae) and «Clidastes» SP. (Squamata: Mosasauridae) from the Upper Cretaceous of NW-Germany. (2012).
Studia Palaeocheloniologica Salmanticensia,
9, 129-142.
https://revistas.usal.es/historico/index.php/Palaeocheloniologica/article/view/9222