Topic summary
Elasmosaurid

Extracted from the Wikipedia article Elasmosauridae.
Paleobiology
Elasmosaurid remains provide some evidence they were preyed upon. A humerus of an unidentified subadult elasmosaurid was found with bite marks matching the teeth of the shark Cretoxyrhina, while a crushed Eromangasaurus skull has tooth-marks matched to the pliosaur Kronosaurus.