"Pluridens" was a moderately large mosasaur at roughly 5 m (16.4 ft) in length if the proportions of the dentary and the rest of the animal matches that of "Halisaurus".A feature that separates "Pluridens" not only from the rest of the Halisaurinae, but from the rest of the Mosasauridae at large is its unusually high tooth count, dentaries assigned to the genus preserve almost twice the amount of teeth found in most other mosasaur genera.