[1][2] Indeterminate remains of the genus have been reported from the Early Cretaceous of Asia.

[3] E. basanus is known from preserved skull material,[4] while E. duffini is only known from teeth.

The genus is distinguished from Hybodus sensu stricto by characters of the skull and teeth.

[5] E. basanus, the most common species, is thought to have reached 1.5 m (4 ft 11in) in length.

[6] E. fraasi from the Late Jurassic of Germany, known from a poorly preserved full body fossil, was placed in Egertonodus in one study, but this has been subsequently questioned by other authors, due to strong differences in tooth morphology from the type species.