Many marine taxa are preserved at Langenberg, although they would not have co-existed often with "Europasaurus". There are at least three turtle genera, "Plesiochelys", "Thalassemys" and up to two unnamed taxa. Actinopterygian fish are abundant, being represented by "Lepidotes", "Macromesodon", "Proscinetes", "Coelodus", "Macrosemius", "Notagogus", "Histionotus", "Ionoscopus", "Callopterus", "Caturus", "Sauropsis", "Belonostomus", and "Thrissops". Also present are at least five distinct morphologies of hybodont sharks, the neoselachians "Palaeoscyllium", "Synechodus" and "Asterodermus". Two marine crocodilians are known from Langenberg, "Machimosaurus" and "Steneosaurus", which likely fed off turtles and fish, and the amphibious crocodilian "Goniopholis" has also been found.