 Lingham-Soliar (1998) remarked that the unique combination of features (e.g.the high tooth count and a unique tooth shape) would normally result in the creation of a completely new subfamily, but did not create a new subfamily due to the rather fragmentary nature of the remains.Lindgren and Siverson (2005) considered many of the unique features of "Pluridens" to be shared with "Halisaurus" and reassigned "P. walkeri" as ""Halisaurus walkeri"".