Lingham-Soliar (1992) mentioned the consideration that the use of the combat-oriented elongated rostrum of "Tylosaurus" was not exclusive to hunting and that it may have also been applied in sexual behavior through battles over female mates between males. However, the study observed the elongated rostrum was invariably present in all individuals regardless of sex, and subsequent studies by Konishi "et al." (2018) and Zietlow (2020) confirmed this pattern. This would imply that sexual selection was not a driver in its evolution and instead refined through sex-independent means.